Implementation of secure email server in cloud computing

1. Implementation of secure mail server
in cloud environment
Advanced Network Security
Dr.Azizol Abdullah

2. Team Work
Nadim K. Madi
Solmaz Salehian
Farzaneh Masoumiyan
Abdulraqeb Abdullah

3. Outlines
I n t r o d u c t i on
 me t h o d o l o gy
 Mi g r a t i ng t o c l oud
e n v i r o n me nt
Co n c l u s i o n?

4. Mail transfer agent
MTA
Postfix
Transport Layer
Security(TLS) Secure Mail server
&
SMTP-AUTH

5. Introduction
Postfix security
 Transport Layer Security (TLS) : make privacy by using
symmetric cryptography and a keyed message authentication
code message reliability.
 SMTP-AUTH : which use Simple Authentication and Security
Layer (SASL) Internet Standard method which can be used with
protocols such as SMTP for adding authentication support to
connection-based protocols .
Main aim of using postfix
 significant impact on Internet mail performance and security

6. Methodology
Linux-based platform has been configured as a server with
postfix and covers TLS and SMTP_AUTH.
Implementation Steps:
 Installation (postfix)
 Configuration
Authentication (SMTP_AUTH)
Digital Certificates
Encryption
 Testing

7. Installation

8. configuration

9. Authentication

10. Testing

11. Testing

12. Testing

13. Migrating to cloud environment
• Cloud-Based Email Services:
– cheaper than running personal email service on-premise.
– rapidly provision new users. More scalable.
– Always run the latest software and configurations without upgrade
hassles.
– Shift the financial burden from upfront capital expense to ongoing
operating expense.

14. Migrating to cloud environment cont ...
7. perform backups new cloud-based email service
6. start using cloud based-email solution
5. Assign the registered domains to several DNS records
Cloud-
4. forward email from old server to new cloud mailbox Based Email
Service
3. create a profile to remember all email accounts
2. setup new users, storage, aliases, and SharePoint
1. new host can import emails from the current one

15. Conclusion
• A mail server has been configured and tested in Linux
environment using postfix Email Transfer Agent to
“send, receive, and deliver” emails.
• The main aim what is ensuring a security level has also been
achieved using TLS Security Certificates. Also authentication
mechanism is supported using SMTP-AUTH.
• This implementation can be migrated to cloud-based
level, over 7 phases to ensure end-to-end functions adaption.
• A further digging for enhancement might be applied in the
mail transfer agent part. As well as the concept of
heterogeneity.

16. ,  ,
Thank You for Your Attention
Q&A