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无声而笑,下了车,向别墅院内走去。还没等进门, …

无声而笑,下了车,向别墅院内走去。还没等进门,

门口的大汉伸手将香港六合彩拦住,机械性的说道:“请出示请

贴。”

东心雷大步上前,两米高的身躯如同一坐小山站在那里,大汉们

只觉得眼前一暗,灯光被香港六合彩挡得严实。香港六合彩从怀

中掏出请贴,递过去,说道:“和香港六合彩白家老大说,洪门

的掌门大哥到了。”大汉接过请贴,打开一看,‘谢文东’三个

大字映如眼中,拿贴的双手下意识颤了一下,香港六合彩的名,

树的影,谢文东的外表再不起身,

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  • 1. E-mail & lists client view Anne Villems University of Tartu, Estonia
  • 2. Everybody has used e-mail!
    • But how many have read documents, which set the standards for e-mail?
    • These standards have been set up in the documents:
    • RFC 822 / RFC 821
    • MIME standards set in
    • RFC 2045/2046/2047/2048
    • (old verson RFC 1521/1522)
  • 3. Mail Standard RFC822
    • Published in 1982
    • Lines no longer than 1000 char
    • Message body - plain US-ASCII text
    • Message header lines - plain US-ASCII text
    • Limit on message length
  • 4. RFC 822 restrictions
    • no multiple objects in a single message
    • no multi-part message bodies
    • no non-textual bodies
    • no X.400 messages can be gatewayd
    • no multifont messages
  • 5. ASCII times are over!
    • Now we want:
    • National language support
    • Possibility to send
      • pictures
      • audiofiles
      • other applications
      • video files
      • multimedia applications
  • 6. MIME - Multipurpose Internet Mail Extension
    • RFC 2045-2048 obsolete RFC 1521, 1522,1590
    • RFC 2045 Format of Internet Message Bodies
    • RFC 2046 Media Types
    • RFC 2047 Message Header Extension for Non-ASCII Text
    • RFC 2048 Registration Procedures
    • To solve RFC822 restrictions without serious incompatibilities with it
  • 7. MIME defines new header lines
    • MIME-Version header field:
    • MIME-Version: 1.0
    • The content type header field to specify the the type and subtype of data in the body:
    • Content-Type: Text/Plain: Charset=ISO-8859-1
    • Content-Transfer-Encoding field to show how data is encoded
    • Content-Transfer-Encoding: QUOTED-PRINTABLE
    • Content-ID and Content-Description for future use
  • 8. “Content type” possible values
    • Text - textual information
    • Image - for transmitting still images (gif,jpeg)
    • Audio - requires audio output device
    • Video - to display moving images, like mpeg
    • Application - information to be processed by application program
    • Multipart - to represent compound, possibly embedded parts
    • Message - an encapsulated message
  • 9. Content-transfer-Encoding
    • base64 - every 3 bytes are represented with 4 7-bit ASCII characters
    • quoted-printable - will code only non-ASCII characters in the text, 76char lines
    • 7bit - no coding, already 7bit
    • 8bit - have to be transported as 8-bit
    • binary - as 8bit, but may contain long lines
  • 10. Quoted-printable
    • Suitable to present most European languages which are based on ISO 8859-x standard
    • Non-ASCII chars will be coded with 3 chars: ´=´ followed by code in base (16) Examples:
    • Ü =DC ä =E4 ö =F6
  • 11. Where to get more info about MIME
    • RFC archive with all RFC-s in plain text:
    • ftp://ftp.carnet.hr/pub/Internet/rfc/
    • Mark Grand’s “MIME Overview”
    • http://www.mindspring.com/~mgrand/mime.html
    • comp.mail.mime FAQ
    • http://www.cis.ohio-state.edu/text/faq/ usent/mail/mime-faq/
  • 12. How e-mail works
    • User Agent (UA) - program, with which human users read, create and manage e-mail
    • Mail Transport Agent (MTA) - handling the movement of messages among computers, non-real-time manner; SMTP - Simple Mail Transfer Protocol - must be installed at every Internet Host
  • 13. Working protocols
    • SMTP - primary mechanism for moving mail around TCP/IP network, handles sites with permanent connections
    • SMTP delivers mail, not allows user to collect it - sometimes the latter is more convenient
    • POP, IMAP - fill the gap, they are oriented to serve users when they want
  • 14. POP, IMAP
    • Aim - to build a distributed e-mail infrastructure
    • LAN oriented, vendor specific
    • POP - Post Office Protocol, latest version POP3, RFC 1725 (1460)
    • IMAP - the Internet Message Access Protocol, latest version IMAP4, RFC2060 (1731)
  • 15. What we want from Mail client?
    • Good user interface
    • advanced text editing
    • spelling checker
    • attachments allowed
    • addressbook (with groups!)
    • MIME
    • uudencode/decode
    • Encryption!
    • + mailing lists
    • pager support
    • multiple accounts
    • multilingual support
    • full text indexing + search
    • message filtering
    • … and more
  • 16. …more requirements for mail client:
    • signatures (multiple?)
    • database
    • sophisticated send:
    • send e-mail to all my students who live in Liberty street
    • download headers and delete mail from server based on header info
    • UseNet Newsgroups
    • Live spelling
    • Thesaurus
    • auto-dialing
    • Free Internet Fax
    • Confirmation ability
  • 17. Mail Clients
    • You can find 28 mail clients in Tucows ultimate software collection for Win95, 13 for Mac and 11 for win 3.x
    • They need from 65K to 4.5M memory
    • Tocows has mirrors in many countries
    • one in Croatia:
    • http://www.hrt.hr/tucows/
  • 18. Most popular clients
    • The Pegasus Mail, no fee, version 2.54
    • http://www.pegasus.usa.com/
    • FAQ http://www.let.nl/pegasus/faq.html
    • Eudora (Qualcomm Inc.)
      • Eudora Pro 3.0.3
      • Eudora Light 3.0.3
    • http://www.qualcomm.com/
  • 19. Problems going from Eudora to Pegasus
    • Your Adressbooks are not convertible.
    • There exists Interguru Web-site to help you to convert Eudora nickname file to Pegasus address file:
    • http://www.interguru.com/eudopega.htm
  • 20. To compare Mail Clients
    • Stroud’s Mail Client Reviews with about 20 packages reviewed:
    • http://cws.internet.com/32mail-reviews.html
    • Intervue Internet Client reviews:
    • http://www.eqp.com/egrinter.html
    • Tucows has evaluated all packages with 0.5 - 5 cows.
  • 21. Some words about Netiquette
    • Be polite!
    • Cite as small part of the letter as possible!
    • DO NOT USE UPPER CASE LETTERS THROUGHOUT THE LETTER
    • Use “smilies”: :-) :-( ;-)
    • Take differencies in the culture into account.
  • 22. Questions
    • ???
    • ???
    • ???