Email server
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The document describes the process of sending an email through a mail server. It explains that the email client first connects to an SMTP server, which identifies the recipient's address and routes the message either directly or through other servers until it reaches the destination SMTP server. There, the email is placed in a mail queue until the recipient retrieves it using POP3 or IMAP. The routing process involves DNS translation of the recipient's domain name to an IP address to connect servers across different domains.
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Simple mail transfer protocol (smtp)
SMTP is a protocol used to transfer email between servers. It uses a push protocol to send email from the sender to the receiver's email server, while POP3 or IMAP are used by the receiver to retrieve emails. SMTP uses TCP connections to transfer emails and operates using a client-server model, with SMTP servers listening for connections from SMTP clients to deliver emails. SMTP can use either an end-to-end or store-and-forward delivery method to route emails between organizations or within an organization.
SMTP - SIMPLE MAIL TRANSFER PROTOCOL
SMTP is the standard protocol for sending emails between servers. Under SMTP, a client SMTP process opens a TCP connection to a remote server SMTP process and sends mail across the connection. The server listens on port 25 for connections. When a connection is made, the two processes execute a simple request-response dialogue defined by SMTP to transmit sender and recipient addresses and the email message itself. Mail is then forwarded to remote servers or delivered locally. POP3 and IMAP allow users to download stored mail from the local server.
E mail transfer .74
SMTP and POP are the main protocols used to transfer emails. SMTP is used to deliver emails from client to local mail server and between mail servers, while POP is used for user access to delivered emails. SMTP uses TCP connections on port 25 to transfer messages in three phases - handshaking, transfer, and closure. POP retrieves emails from the POP server to the user's machine using a TCP connection on port 110 in two stages - authentication and message transfer.
how email works
Electronic mail, commonly known as email, allows users to transmit messages over the Internet. It uses Simple Mail Transfer Protocol (SMTP) to send messages between servers and uses either POP3 or IMAP for users to access their messages. SMTP focuses on reliably transferring messages between machines while POP3 and IMAP specify how users can retrieve and manage messages stored on the mail server. When sending an email, the sender's mail transfer agent adds a "received" header to the message to track its path through intermediate servers to the destination mail transfer agent. While convenient, SMTP is not secure and allows for spoofing, but techniques like SPF help validate authentic senders. Mail servers can also selectively reject traffic for policy or technical reasons.
Simple Mail Transfer Protocol
SMTP (Simple Mail Transfer Protocol) is an Internet standard protocol for electronic mail transmission. It was first defined in 1982 and became widely used in the early 1980s as a complement to UUCP mail. SMTP uses a client-server model where the client initiates a connection and sends messages to the server, which then acknowledges receipt. It allows messages to be transferred between machines that are intermittently connected. Common SMTP commands include HELO, MAIL FROM, RCPT TO, DATA, QUIT, and RSET. SMTP can be secured using SSL/TLS to encrypt the communication channel. The latest developments include supporting real-time dynamic content in emails and internationalized email addresses encoded in UTF-8.
Simple Mail Transfer Protocol
This document describes a project to develop a graphical user interface (GUI) client email program that allows users to access remote message stores as if they were local. The project uses JavaMail API to provide email functionality like retrieving, composing, forwarding and deleting emails. It allows users to access their email accounts from multiple computers in a compatible way with Internet email standards. The project aims to provide a similar user experience to Outlook for various email tasks. It develops a GUI program that navigates users through different email functions. The overall goal is to gain insights into building real-time applications like Yahoo Mail and Gmail.
Email forensic
The document discusses email forensics and describes techniques and tools used to analyze email messages for forensic investigations. It provides an overview of email architecture and describes the various actors and components involved in email communication, such as senders, recipients, servers, and protocols. It details the information contained in email headers that can be used for forensic analysis and lists common tools and techniques for investigating email, such as header analysis.
E mail flow
This document discusses how email works by describing the key components involved in email transmission and storage. It explains that email uses a store-and-forward model where messages are sent via SMTP and stored on a mail server until the recipient retrieves it using either POP3 or IMAP. SMTP is the protocol that sends messages between servers over TCP port 25, while POP3 and IMAP are the protocols that clients use to retrieve messages from port 110 and 143 respectively. Common email clients include Outlook, Thunderbird, and web-based options like Gmail and Yahoo Mail.
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Simple mail transfer protocol (smtp)
SMTP is a protocol used to transfer email between servers. It uses a push protocol to send email from the sender to the receiver's email server, while POP3 or IMAP are used by the receiver to retrieve emails. SMTP uses TCP connections to transfer emails and operates using a client-server model, with SMTP servers listening for connections from SMTP clients to deliver emails. SMTP can use either an end-to-end or store-and-forward delivery method to route emails between organizations or within an organization.
SMTP - SIMPLE MAIL TRANSFER PROTOCOL
SMTP is the standard protocol for sending emails between servers. Under SMTP, a client SMTP process opens a TCP connection to a remote server SMTP process and sends mail across the connection. The server listens on port 25 for connections. When a connection is made, the two processes execute a simple request-response dialogue defined by SMTP to transmit sender and recipient addresses and the email message itself. Mail is then forwarded to remote servers or delivered locally. POP3 and IMAP allow users to download stored mail from the local server.
E mail transfer .74
SMTP and POP are the main protocols used to transfer emails. SMTP is used to deliver emails from client to local mail server and between mail servers, while POP is used for user access to delivered emails. SMTP uses TCP connections on port 25 to transfer messages in three phases - handshaking, transfer, and closure. POP retrieves emails from the POP server to the user's machine using a TCP connection on port 110 in two stages - authentication and message transfer.
how email works
Electronic mail, commonly known as email, allows users to transmit messages over the Internet. It uses Simple Mail Transfer Protocol (SMTP) to send messages between servers and uses either POP3 or IMAP for users to access their messages. SMTP focuses on reliably transferring messages between machines while POP3 and IMAP specify how users can retrieve and manage messages stored on the mail server. When sending an email, the sender's mail transfer agent adds a "received" header to the message to track its path through intermediate servers to the destination mail transfer agent. While convenient, SMTP is not secure and allows for spoofing, but techniques like SPF help validate authentic senders. Mail servers can also selectively reject traffic for policy or technical reasons.
Simple Mail Transfer Protocol
SMTP (Simple Mail Transfer Protocol) is an Internet standard protocol for electronic mail transmission. It was first defined in 1982 and became widely used in the early 1980s as a complement to UUCP mail. SMTP uses a client-server model where the client initiates a connection and sends messages to the server, which then acknowledges receipt. It allows messages to be transferred between machines that are intermittently connected. Common SMTP commands include HELO, MAIL FROM, RCPT TO, DATA, QUIT, and RSET. SMTP can be secured using SSL/TLS to encrypt the communication channel. The latest developments include supporting real-time dynamic content in emails and internationalized email addresses encoded in UTF-8.
Simple Mail Transfer Protocol
This document describes a project to develop a graphical user interface (GUI) client email program that allows users to access remote message stores as if they were local. The project uses JavaMail API to provide email functionality like retrieving, composing, forwarding and deleting emails. It allows users to access their email accounts from multiple computers in a compatible way with Internet email standards. The project aims to provide a similar user experience to Outlook for various email tasks. It develops a GUI program that navigates users through different email functions. The overall goal is to gain insights into building real-time applications like Yahoo Mail and Gmail.
Email forensic
The document discusses email forensics and describes techniques and tools used to analyze email messages for forensic investigations. It provides an overview of email architecture and describes the various actors and components involved in email communication, such as senders, recipients, servers, and protocols. It details the information contained in email headers that can be used for forensic analysis and lists common tools and techniques for investigating email, such as header analysis.
E mail flow
This document discusses how email works by describing the key components involved in email transmission and storage. It explains that email uses a store-and-forward model where messages are sent via SMTP and stored on a mail server until the recipient retrieves it using either POP3 or IMAP. SMTP is the protocol that sends messages between servers over TCP port 25, while POP3 and IMAP are the protocols that clients use to retrieve messages from port 110 and 143 respectively. Common email clients include Outlook, Thunderbird, and web-based options like Gmail and Yahoo Mail.
Simple Mail Transfer Protocol
This document provides an overview of the Simple Mail Transfer Protocol (SMTP). It discusses how SMTP clients and servers work, how messages are sent to SMTP servers using either relaying or DNS, the SMTP communication model involving connection establishment, message transfer, and connection termination. It also describes mail processing involving envelopes and headers, status codes, and special features like mail forwarding, gatewaying, and relaying. Limitations of SMTP are also noted.
Smtp
SMTP (Simple Mail Transfer Protocol) is the standard Internet protocol for electronic mail transmission. It was first defined in 1982 and last updated in 2008. SMTP uses TCP port 25 and is used by mail servers to send and receive emails, while client mail applications typically only use SMTP for sending messages and protocols like POP or IMAP for receiving. A sample SMTP session is shown where a client sends a test email message to two recipients on the same mail server.
How Email Works
1) Email is sent using SMTP and travels through various servers until it reaches the destination mail server.
2) The email is then stored on the destination mail server and retrieved by the recipient using either POP3 or IMAP when they access their email.
3) POP3 downloads emails to the local machine while IMAP stores emails on the server and allows remote access.
Email - Electronic Mail
Overview of Email protocols.
Electronic mail was one of the first applications of the fledgling Internet back in the 70ies of the last century. Mail represents basically an electronic equivalent of telegrams that can be sent without having a direct and simultaneous network connection with the recipient.
In email systems, a mail transfer agent (MTA) takes care of the message to be sent and repeatedly tries to deliver the message to the ultimate receiver until successful.
One of the first and still prevalent email protocols is SMTP (Simple Mail Transfer Protocol). It is a very simple protocol for sending electronic messages consisting of a header and a body between a sender and a recipient (relay agent or final mail transfer agent).
SMPT is not suited for receiving mail. Additional protocols like POP (Post Office Protocol) or the newer IMAP (Internet Mail Access Protocol) are needed to retrieve mail messages from a mail box.
SMPT was originally restricted to the ASCII character set so binary content or non-ASCII characters could not be used in mail messages. To overcome this limitation, MIME (Multipurpose Internet Mail Extensions) was devised to allow mail senders to encode non-ASCII content with special character encodings.
SNMP/SMTP/MIME
Simple Network Management Protocol
Simple Mail Transfer Protocol
Multi-Purpose Internet Mail Extensions
Smtp protocol
Simple Mail Transfer Protocol (SMTP) is the standard protocol for sending email across the internet. SMTP was created in 1982 and uses a client-server model with user agents to prepare messages and mail transfer agents to reliably transfer messages between servers. An email consists of an envelope containing sender and recipient addresses, and a message with a header defining sender, recipient, subject, and a body containing the actual content. SMTP works by establishing a TCP connection between servers, sending commands like MAIL FROM, RCPT TO, and DATA to transfer the message, then terminating the connection. Extensions like MIME allow non-text content like images and files to be included in emails.
E mail forensics
The document discusses e-mail forensics. It begins by describing the architecture of e-mail systems, including mail user agents, message stores, mail submission and transfer agents, and mail delivery agents. It then discusses common e-mail client attacks like malware distribution, phishing, spam, and denial-of-service attacks. The document outlines techniques for e-mail forensic investigation such as header analysis and server investigation. It also presents tools that can be used for e-mail forensics and summarizes a research paper on detecting e-mail date and time spoofing through analysis of header fields.
Tcp presentation
TCP is a connection-oriented protocol that is widely used for data transmission over the internet. It provides process-to-process communication using port numbers and assigns sequence numbers to each transmitted data segment. TCP establishes connections using a three-way handshake between a client and server, allowing for full-duplex communication and reliable data transfer through acknowledgement numbers and retransmission of lost packets. Connections are terminated when either party closes the connection.
E mail protocol - SMTP
This document provides an overview of internet protocols for email (SMTP) including:
- SMTP is used to transfer email between servers and works in a client-server model. Email clients use POP3 or IMAP to retrieve messages from servers.
- Key components include user agents (email clients), message transfer agents (MTA servers), and protocols like SMTP, POP3, and IMAP.
- SMTP uses a stored-and-forward method to route emails through intermediate servers within a network on its way to the destination address.
How e mail works
E-mail works by routing messages from server to server until it reaches the recipient's mail server. Messages are sent via SMTP servers called Mail Transport Agents (MTAs) and stored on the recipient's incoming mail server called a Mail Delivery Agent (MDA). Recipients then retrieve messages from the MDA using either POP3 or IMAP protocols. MTAs act like post offices that transport messages, while MDAs act like mailboxes that store messages until recipients access them. Retrieving mail requires a Mail User Agent like an email client or webmail interface.
Electronic mail
One of the most popular Internet services is electronic mail (e-mail).
At the beginning of the Internet era, the messages sent by electronic mail were short and consisted of text only.
Today, electronic mail is much more complex. It allows a message to include text, audio, and video.
It also allows one message to be sent to one or more recipients.
Email server system1.ppt
Microsoft Outlook is used to manage email in organizations using different domains. It sends emails from employees or clients to the main server using SMTP. For Linux/Unix systems, a lightweight command line tool called Email Server System is used to perform similar email functions. The Email Server System has a simple interface and can send emails and attachments to multiple users. An email server receives emails from users and forwards them to recipients. It consists of storage to hold emails for local users and components to transfer messages between mail servers and email clients. An email client-server system involves multiple clients connecting to a central server, which provides services to clients upon request.
POP (Post Office Protocol )
POP stands for Post Office Protocol and downloads emails from a server to a single computer, then deletes them from the server. This means emails can appear missing if checking from a different computer. SMTP uses rules to send messages out between sender and receiver addresses by accepting mail addresses from SMTP clients and servers. The document compares POP and SMTP protocols for sending and receiving emails.
Email Forensics
This document provides an overview of email forensics techniques and tools used in network forensics investigations. It discusses the typical architecture of email systems and protocols like SMTP, POP, and IMAP. Key points covered include email headers, the information contained in Received headers, and how an email travels from sender to recipient through various mail servers. Spoofing emails is also briefly explained. The document aims to introduce investigators to analyzing email evidence at different layers of the network and tools needed for forensic analysis of email messages and server logs.
Electronic mail
This document discusses the structure and architecture of email. It begins with an introduction and history of email, then describes how an email is composed of a header and message body. It explains that emails are sent and received through a system of user agents, message transfer agents, and message access agents. User agents allow users to compose and read emails, while message transfer agents use SMTP to transfer emails across networks, and message access agents pull emails from servers using protocols like POP3 and IMAP.
How Email Is Deliverd Over the Internet
Email is delivered over the Internet by dividing messages into packets that travel different routes through routers on the Internet. The packets are recombined at the destination into a readable email message after all packets have arrived, even if they are out of order from taking different paths over the network.
POP3 Post Office Protocol
POP (Post Office Protocol) is an Internet standard protocol used by email clients to retrieve emails from remote mail servers over TCP/IP. POP was first published in 1984 and updated to POP2 in 1985 and POP3 in 1988, which is still the active version. POP works by storing incoming emails on the POP server until the user logs in with their email client and downloads the messages to their local device, after which the messages are deleted from the server. While POP allows users to access their emails from a single device offline, it does not support accessing the same account from multiple devices simultaneously.
Electronic Mail
E-mail uses a client-server model with three main components - the user agent (UA), the message transfer agent (SMTP), and the message access agent (POP3/IMAP). A basic e-mail message involves the UA composing a message on the client, the MTA transferring it to the server using SMTP protocols, and the MAA retrieving it from the server to the recipient's UA using POP3 or IMAP protocols. MIME extensions allow non-text data like images and files to be sent as attachments by encoding them into ASCII format during transfer.
10135 a 05
This document provides an overview of managing message transport in Microsoft Exchange Server. It discusses the components of message transport, how messages are routed within an Exchange organization and between Active Directory sites. It also covers options for configuring and modifying the default message flow, and tools for troubleshooting SMTP message delivery. The document includes demonstrations of configuring hub transport servers, accepted/remote domains, and SMTP connectors. It also discusses back pressure for monitoring system resources.
E mail protocols
This document discusses several email and messaging protocols:
- SMTP is used for sending and receiving basic email over TCP/IP networks. IMAP allows accessing a central email repository from multiple devices so emails are stored on the server. POP3 stores emails on a single device.
- SMS (Short Message Service) enables short text messages up to 160 characters between mobile devices, while MMS (Multimedia Messaging Service) extends this to include multimedia content like images.
Simple Mail Transfer Protocol
This document provides an overview of the Simple Mail Transfer Protocol (SMTP). It begins with an introduction that defines SMTP and its use for electronic mail transmission. It then covers the working of SMTP, including the client-server model, commands, responses, and mail transfer phases of connection setup, mail transfer, and connection termination. It also provides a comparison of SMTP to HTTP, noting differences in how each protocol transfers files and initiates TCP connections. In summary, the document outlines the key components and functionality of the SMTP protocol for electronic mail transmission across the internet.
SMTP Simple Mail Transfer Protocol
it's little information about SMTP, This is done by Siddaramaiah M C student of cs dept. kuvempu university
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Simple Mail Transfer Protocol
This document provides an overview of the Simple Mail Transfer Protocol (SMTP). It discusses how SMTP clients and servers work, how messages are sent to SMTP servers using either relaying or DNS, the SMTP communication model involving connection establishment, message transfer, and connection termination. It also describes mail processing involving envelopes and headers, status codes, and special features like mail forwarding, gatewaying, and relaying. Limitations of SMTP are also noted.
Smtp
SMTP (Simple Mail Transfer Protocol) is the standard Internet protocol for electronic mail transmission. It was first defined in 1982 and last updated in 2008. SMTP uses TCP port 25 and is used by mail servers to send and receive emails, while client mail applications typically only use SMTP for sending messages and protocols like POP or IMAP for receiving. A sample SMTP session is shown where a client sends a test email message to two recipients on the same mail server.
How Email Works
1) Email is sent using SMTP and travels through various servers until it reaches the destination mail server.
2) The email is then stored on the destination mail server and retrieved by the recipient using either POP3 or IMAP when they access their email.
3) POP3 downloads emails to the local machine while IMAP stores emails on the server and allows remote access.
Email - Electronic Mail
Overview of Email protocols.
Electronic mail was one of the first applications of the fledgling Internet back in the 70ies of the last century. Mail represents basically an electronic equivalent of telegrams that can be sent without having a direct and simultaneous network connection with the recipient.
In email systems, a mail transfer agent (MTA) takes care of the message to be sent and repeatedly tries to deliver the message to the ultimate receiver until successful.
One of the first and still prevalent email protocols is SMTP (Simple Mail Transfer Protocol). It is a very simple protocol for sending electronic messages consisting of a header and a body between a sender and a recipient (relay agent or final mail transfer agent).
SMPT is not suited for receiving mail. Additional protocols like POP (Post Office Protocol) or the newer IMAP (Internet Mail Access Protocol) are needed to retrieve mail messages from a mail box.
SMPT was originally restricted to the ASCII character set so binary content or non-ASCII characters could not be used in mail messages. To overcome this limitation, MIME (Multipurpose Internet Mail Extensions) was devised to allow mail senders to encode non-ASCII content with special character encodings.
SNMP/SMTP/MIME
Simple Network Management Protocol
Simple Mail Transfer Protocol
Multi-Purpose Internet Mail Extensions
Smtp protocol
Simple Mail Transfer Protocol (SMTP) is the standard protocol for sending email across the internet. SMTP was created in 1982 and uses a client-server model with user agents to prepare messages and mail transfer agents to reliably transfer messages between servers. An email consists of an envelope containing sender and recipient addresses, and a message with a header defining sender, recipient, subject, and a body containing the actual content. SMTP works by establishing a TCP connection between servers, sending commands like MAIL FROM, RCPT TO, and DATA to transfer the message, then terminating the connection. Extensions like MIME allow non-text content like images and files to be included in emails.
E mail forensics
The document discusses e-mail forensics. It begins by describing the architecture of e-mail systems, including mail user agents, message stores, mail submission and transfer agents, and mail delivery agents. It then discusses common e-mail client attacks like malware distribution, phishing, spam, and denial-of-service attacks. The document outlines techniques for e-mail forensic investigation such as header analysis and server investigation. It also presents tools that can be used for e-mail forensics and summarizes a research paper on detecting e-mail date and time spoofing through analysis of header fields.
Tcp presentation
TCP is a connection-oriented protocol that is widely used for data transmission over the internet. It provides process-to-process communication using port numbers and assigns sequence numbers to each transmitted data segment. TCP establishes connections using a three-way handshake between a client and server, allowing for full-duplex communication and reliable data transfer through acknowledgement numbers and retransmission of lost packets. Connections are terminated when either party closes the connection.
E mail protocol - SMTP
This document provides an overview of internet protocols for email (SMTP) including:
- SMTP is used to transfer email between servers and works in a client-server model. Email clients use POP3 or IMAP to retrieve messages from servers.
- Key components include user agents (email clients), message transfer agents (MTA servers), and protocols like SMTP, POP3, and IMAP.
- SMTP uses a stored-and-forward method to route emails through intermediate servers within a network on its way to the destination address.
How e mail works
E-mail works by routing messages from server to server until it reaches the recipient's mail server. Messages are sent via SMTP servers called Mail Transport Agents (MTAs) and stored on the recipient's incoming mail server called a Mail Delivery Agent (MDA). Recipients then retrieve messages from the MDA using either POP3 or IMAP protocols. MTAs act like post offices that transport messages, while MDAs act like mailboxes that store messages until recipients access them. Retrieving mail requires a Mail User Agent like an email client or webmail interface.
Electronic mail
One of the most popular Internet services is electronic mail (e-mail).
At the beginning of the Internet era, the messages sent by electronic mail were short and consisted of text only.
Today, electronic mail is much more complex. It allows a message to include text, audio, and video.
It also allows one message to be sent to one or more recipients.
Email server system1.ppt
Microsoft Outlook is used to manage email in organizations using different domains. It sends emails from employees or clients to the main server using SMTP. For Linux/Unix systems, a lightweight command line tool called Email Server System is used to perform similar email functions. The Email Server System has a simple interface and can send emails and attachments to multiple users. An email server receives emails from users and forwards them to recipients. It consists of storage to hold emails for local users and components to transfer messages between mail servers and email clients. An email client-server system involves multiple clients connecting to a central server, which provides services to clients upon request.
POP (Post Office Protocol )
POP stands for Post Office Protocol and downloads emails from a server to a single computer, then deletes them from the server. This means emails can appear missing if checking from a different computer. SMTP uses rules to send messages out between sender and receiver addresses by accepting mail addresses from SMTP clients and servers. The document compares POP and SMTP protocols for sending and receiving emails.
Email Forensics
This document provides an overview of email forensics techniques and tools used in network forensics investigations. It discusses the typical architecture of email systems and protocols like SMTP, POP, and IMAP. Key points covered include email headers, the information contained in Received headers, and how an email travels from sender to recipient through various mail servers. Spoofing emails is also briefly explained. The document aims to introduce investigators to analyzing email evidence at different layers of the network and tools needed for forensic analysis of email messages and server logs.
Electronic mail
This document discusses the structure and architecture of email. It begins with an introduction and history of email, then describes how an email is composed of a header and message body. It explains that emails are sent and received through a system of user agents, message transfer agents, and message access agents. User agents allow users to compose and read emails, while message transfer agents use SMTP to transfer emails across networks, and message access agents pull emails from servers using protocols like POP3 and IMAP.
How Email Is Deliverd Over the Internet
Email is delivered over the Internet by dividing messages into packets that travel different routes through routers on the Internet. The packets are recombined at the destination into a readable email message after all packets have arrived, even if they are out of order from taking different paths over the network.
POP3 Post Office Protocol
POP (Post Office Protocol) is an Internet standard protocol used by email clients to retrieve emails from remote mail servers over TCP/IP. POP was first published in 1984 and updated to POP2 in 1985 and POP3 in 1988, which is still the active version. POP works by storing incoming emails on the POP server until the user logs in with their email client and downloads the messages to their local device, after which the messages are deleted from the server. While POP allows users to access their emails from a single device offline, it does not support accessing the same account from multiple devices simultaneously.
Electronic Mail
E-mail uses a client-server model with three main components - the user agent (UA), the message transfer agent (SMTP), and the message access agent (POP3/IMAP). A basic e-mail message involves the UA composing a message on the client, the MTA transferring it to the server using SMTP protocols, and the MAA retrieving it from the server to the recipient's UA using POP3 or IMAP protocols. MIME extensions allow non-text data like images and files to be sent as attachments by encoding them into ASCII format during transfer.
10135 a 05
This document provides an overview of managing message transport in Microsoft Exchange Server. It discusses the components of message transport, how messages are routed within an Exchange organization and between Active Directory sites. It also covers options for configuring and modifying the default message flow, and tools for troubleshooting SMTP message delivery. The document includes demonstrations of configuring hub transport servers, accepted/remote domains, and SMTP connectors. It also discusses back pressure for monitoring system resources.
E mail protocols
This document discusses several email and messaging protocols:
- SMTP is used for sending and receiving basic email over TCP/IP networks. IMAP allows accessing a central email repository from multiple devices so emails are stored on the server. POP3 stores emails on a single device.
- SMS (Short Message Service) enables short text messages up to 160 characters between mobile devices, while MMS (Multimedia Messaging Service) extends this to include multimedia content like images.
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SMTP Simple Mail Transfer Protocol
it's little information about SMTP, This is done by Siddaramaiah M C student of cs dept. kuvempu university
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E-mail works by using SMTP servers to send messages and POP3 or IMAP servers to receive messages. When a user composes an email using their mail client, the SMTP server handles passing the message to the recipient's mail server which then delivers it to their POP3/IMAP mailbox for retrieval. POP3 downloads emails to the local machine while IMAP stores them on the server, allowing access from different devices.
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This document summarizes an electronic mail presentation that covers:
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- Common email protocols like SMTP, POP, IMAP, and MIME that define how messages are transferred and accessed between clients and servers.
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Email ftp
Electronic mail can be forwarded to third parties and is handled through user mailboxes like inbox and outbox. Early systems were command-based while newer ones have a graphical user interface. MIME allows non-ASCII content to be encoded and sent via email. POP3 and IMAP4 are protocols for accessing email on a server, with IMAP4 providing more folder organization and preview features than POP3. When sending email between different systems, user agents and mail transfer agents are needed on both the client and server sides.
Email ftp
Electronic mail systems allow users to compose and send messages to other users. They utilize user agents to create and manage mailboxes, as well as mail transfer agents (MTAs) like SMTP to transmit messages between systems. MIME extensions allow non-ASCII content like images and files to be included in email messages by encoding them. IMAP and POP3 are common protocols for accessing email on a server, with IMAP providing more features for organizing and searching mail than POP3.
Email transfer part 1
Here are the key points about how e-mail works:
- E-mail is composed and sent using a mail user agent (MUA) like Outlook or Gmail. This attaches the message to an e-mail protocol like SMTP.
- The message is passed from the MUA to a Mail Transfer Agent (MTA) like an SMTP server. This acts as the initial sender.
- The MTA breaks the message into packets and adds routing information to each packet header.
- Packets are routed independently through different computer networks and may take different paths to the destination.
- Intermediate MTAs receive packets and route them towards the destination domain based on DNS lookups.
-
Smtp
SMTP is a protocol that handles the delivery of emails between servers. It works behind the scenes to move emails from the sender's computer to the recipient's inbox in a store-and-forward manner, passing through multiple servers along the way and briefly storing emails at each step. An SMTP relay service receives emails from a client and queues them for delivery to the final destination, either successfully delivering the email or returning a non-delivery report. It provides reputation-based filtering to help ensure only legitimate emails are delivered.
Introduction to basics command in linux, and working in linux
The document discusses email (mail) services and commands in Linux. It describes how email works, including how messages are routed from server to server to the recipient, and how mail transfer agents (MTAs) and mail delivery agents (MDAs) manage delivery. It also outlines some common mail commands like mail, -s, -c, and their functions. Finally, it briefly covers sending mail from shell scripts and the different types of mailing lists.
Electronic mail
Email allows users to send electronic messages from one computer to another via the internet. It works on a client-server model where clients send and receive email through email servers connected over the internet. Email messages consist of a header containing sender, recipient, date and subject information, and a body containing the text and any attachments. Common email protocols include SMTP for message transfer between servers, and POP and IMAP for client access to messages on servers.
Application layer
DNS maps domain names to IP addresses by using a distributed database and servers. It translates human-friendly domain names like www.example.com to numerical IP addresses like 192.0.2.1 that computers use to locate each other on the network. The DNS database contains resource records that associate domain names with IP addresses and other information. Name servers query the DNS database to resolve domain names and return IP addresses to applications and users.
Email working
Electronic mail works by a user connecting to an SMTP server when sending a message. The SMTP server looks up the recipient's domain name using DNS to determine the destination Mail eXchanger server. It then sends the message to that server via SMTP. The receiving server stores the message and makes it available for the recipient to access via web, POP, or IMAP. Over 204 million emails are sent per minute, demonstrating how email has become indispensable in modern society for maintaining social and professional networks through asynchronous communication that is faster than regular mail but not as immediate as a phone call.
Article on SMPT
Using your own SMTP server has advantages over POP3 such as reliable BCC handling, instant delivery of emails, and ability to block spam and viruses before delivery. However, it requires a constant internet connection and dynamic IP addresses can cause issues if the IP changes and emails are delivered to the wrong address temporarily. It is not recommended if the internet connection is unstable or the server computer frequently crashes.
Similar to Email server (20)
Lecture 9 electronic_mail_representation_and_transfer
Lecture 9 electronic_mail_representation_and_transfer
Introduction to basics command in linux, and working in linux
Introduction to basics command in linux, and working in linux
More from MitanurTania
Mesh topology lab
This document provides instructions for drawing a mesh network topology with the following steps: select end devices and draw them, select switches for each end device and draw them, connect each computer and switch in pairs, and configure IP settings for each device.
Ring topology lab
Ring topology connects computers and network devices in a closed loop so that each device is connected to exactly two other devices on the network. The network uses a single cable to transmit data between devices and if one device fails, it disrupts communication for the entire network.
Man cisco packet tracer
Cisco Packet Tracer is a network simulation software developed by Cisco Systems for network education. It allows students to design, implement, and modify network topologies and concepts without physical hardware. The document is a manual submission for the Cisco Packet Tracer software by a student named Mitanur Tania from the Department of Computer Science and Engineering at City University.
Hybrid topology
A hybrid topology combines two or more network topologies to take advantage of their strengths. Common hybrid topologies include a star/bus topology which combines a star and bus topology, and a star/ring topology which combines a star and ring topology. The objective is to leverage different topologies to improve network design.
Lab room topology
The document outlines a lab room topology project with the objectives of configuring the topology on a server and assigning IP addresses. A student submitted the document to their senior lecturer in the computer science department providing details of their lab room topology project.
Lan lab
A student submitted a document about configuring a LAN using Cisco Packet Tracer. The objective was to learn how to set up a local area network that interconnects devices within a home or small business by configuring LAN settings to limit the number of connected devices and assign IP addresses.
Star topology lab
This document outlines the steps to configure a star topology network, which involves selecting a central switch, connecting all devices to the switch using cables, and configuring IP addresses and subnet masks for each device connected to the switch with addresses in the 10.0.0.0/24 subnet range.
Dns server
The document discusses configuring a DNS server with 3 objectives: 1) Enable DNS service and domain lookup on a router, 2) Configure the router with a public name-server, and 3) Configure the DNS server with hostnames of the local network to enable name resolution within the network.
Bus topology lab
This document describes the steps to configure a bus topology network, including placing a switch and terminator on a network drawing area, connecting drop lines and end devices to the switch, and assigning IP addresses to 5 computers on the 192.168.1.0/24 subnet.
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Mechanical Engineering on AAI Summer Training Report-003.pdf
Mechanical Engineering PROJECT REPORT ON SUMMER VOCATIONAL TRAINING
AT MBB AIRPORT
Null Bangalore | Pentesters Approach to AWS IAM
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
Comparative analysis between traditional aquaponics and reconstructed aquapon...
The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
Design and optimization of ion propulsion drone
Electric propulsion technology is widely used in many kinds of vehicles in recent years, and aircrafts are no exception. Technically, UAVs are electrically propelled but tend to produce a significant amount of noise and vibrations. Ion propulsion technology for drones is a potential solution to this problem. Ion propulsion technology is proven to be feasible in the earth’s atmosphere. The study presented in this article shows the design of EHD thrusters and power supply for ion propulsion drones along with performance optimization of high-voltage power supply for endurance in earth’s atmosphere.
VARIABLE FREQUENCY DRIVE. VFDs are widely used in industrial applications for...
Variable frequency drive .A Variable Frequency Drive (VFD) is an electronic device used to control the speed and torque of an electric motor by varying the frequency and voltage of its power supply. VFDs are widely used in industrial applications for motor control, providing significant energy savings and precise motor operation.
一比一原版(爱大毕业证书)爱荷华大学毕业证如何办理
原版一模一样【微信：741003700 】【(爱大毕业证书)爱荷华大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(爱大毕业证书)爱荷华大学毕业证【微信：741003700 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(爱大毕业证书)爱荷华大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(爱大毕业证书)爱荷华大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(爱大毕业证书)爱荷华大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
Data Driven Maintenance | UReason Webinar
Discover the latest insights on Data Driven Maintenance with our comprehensive webinar presentation. Learn about traditional maintenance challenges, the right approach to utilizing data, and the benefits of adopting a Data Driven Maintenance strategy. Explore real-world examples, industry best practices, and innovative solutions like FMECA and the D3M model. This presentation, led by expert Jules Oudmans, is essential for asset owners looking to optimize their maintenance processes and leverage digital technologies for improved efficiency and performance. Download now to stay ahead in the evolving maintenance landscape.
一比一原版(osu毕业证书)美国俄勒冈州立大学毕业证如何办理
原版一模一样【微信：741003700 】【(osu毕业证书)美国俄勒冈州立大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
This document serves as a comprehensive step-by-step guide on how to effectively use PyCharm for remote debugging of the Windows Subsystem for Linux (WSL) on a local Windows machine. It meticulously outlines several critical steps in the process, starting with the crucial task of enabling permissions, followed by the installation and configuration of WSL.
The guide then proceeds to explain how to set up the SSH service within the WSL environment, an integral part of the process. Alongside this, it also provides detailed instructions on how to modify the inbound rules of the Windows firewall to facilitate the process, ensuring that there are no connectivity issues that could potentially hinder the debugging process.
The document further emphasizes on the importance of checking the connection between the Windows and WSL environments, providing instructions on how to ensure that the connection is optimal and ready for remote debugging.
It also offers an in-depth guide on how to configure the WSL interpreter and files within the PyCharm environment. This is essential for ensuring that the debugging process is set up correctly and that the program can be run effectively within the WSL terminal.
Additionally, the document provides guidance on how to set up breakpoints for debugging, a fundamental aspect of the debugging process which allows the developer to stop the execution of their code at certain points and inspect their program at those stages.
Finally, the document concludes by providing a link to a reference blog. This blog offers additional information and guidance on configuring the remote Python interpreter in PyCharm, providing the reader with a well-rounded understanding of the process.
Computational Engineering IITH Presentation
This Presentation will give you a brief idea about what Computational Engineering at IIT Hyderabad has to offer.
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
2008 BUILDING CONSTRUCTION Illustrated - Ching Chapter 02 The Building.pdf
2008 BUILDING CONSTRUCTION Illustrated - Ching Chapter 02 The Building
学校原版美国波士顿大学毕业证学历学位证书原版一模一样
原版一模一样【微信：741003700 】【美国波士顿大学毕业证学历学位证书】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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1FIDIC-CONSTRUCTION-CONTRACT-2ND-ED-2017-RED-BOOK.pdf
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Mechanical Engineering on AAI Summer Training Report-003.pdf
Mechanical Engineering on AAI Summer Training Report-003.pdf
Comparative analysis between traditional aquaponics and reconstructed aquapon...
Comparative analysis between traditional aquaponics and reconstructed aquapon...
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
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VARIABLE FREQUENCY DRIVE. VFDs are widely used in industrial applications for...
VARIABLE FREQUENCY DRIVE. VFDs are widely used in industrial applications for...
4. Mosca vol I -Fisica-Tipler-5ta-Edicion-Vol-1.pdf
4. Mosca vol I -Fisica-Tipler-5ta-Edicion-Vol-1.pdf
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
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2008 BUILDING CONSTRUCTION Illustrated - Ching Chapter 02 The Building.pdf
2008 BUILDING CONSTRUCTION Illustrated - Ching Chapter 02 The Building.pdf
Email server
- 1. Email Server Submitted By Mitanur Tania ID:1925102522 Batch: 51st Dept. of CSE Submitted to Pranab Bandhu Nath Senior Lecturer, Dept. of CSE City University
- 2. Mail Server
- 3. Objective •The email client connects to the SMTP server. •The SMTP server identifies and processes the recipient's email address, the body of the message and additional attachments. •If the domain name is the same as the sender's, the message is routed directly over POP3 or IMAP. •If the domain name is different, the SMTP server communicates with the domain name system (DNS) to find the recipient's server. The DNS translates the recipient's email domain name into an Internet Protocol IP address. •The recipient's IP address connects to the SMTP server. Once the IP is identified, the sent message is routed between unrelated SMTP servers until it arrives at its destination. •The recipient's SMTP server handles the email. It checks the message and directs it over to an IMAP or POP3 server. The email is then placed in a mail queue until the recipient retrieves it.