e-mail headers

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3 total messages Started by willis Thu, 17 Dec 1992 23:15

#3419

Author: willis
Date: Thu, 17 Dec 1992 23:15

36 lines
1963 bytes

Hello,

    I am interested in learning more about how to decipher e-mail 
    headers and was wondering if there is any documentation available 
    on an anonymous ftp site somewhere.  As an example, I included 
    the following line extracted from a recent mail message I received:


             <921217155244.22202e59@EVAX0.ENG.FSU.EDU> 


    I know that 921217 is the date and that 155244 is the time the message 
    was sent/received, but I don't know what .22202e59 means (given - I 
    knew the name of the sender from the other header information that was 
    excluded).  If there is some documentation or books around that 
    describe this example as well as other aspects of e-mail and e-mail 
    headers, I would be glad to find out how to access it.  Thanks in 
    advance.

+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+


======================================================================
 Russell E. Willis                             
 FSU/AC&NS: Academic Computing and Networking Services
 Tallahassee, Fl. 32310
                                             
 e-mail:      willis@evax0.eng.fsu.edu
              willis@mailer.acns.fsu.edu
              willis@loligo.acns.fsu.edu        

 *
 * Disclaimer: "The opinions expressed herein are mine alone and not   
 *              those of Academic Computing and Networking Services."
 *                                                          --R.E.W.--
======================================================================

Re: e-mail headers

#3423

Author: Karl_Kleinpaste
Date: Fri, 18 Dec 1992 18:29

26 lines
1924 bytes

willis@evax0.eng.fsu.edu writes:
	<921217155244.22202e59@EVAX0.ENG.FSU.EDU> 
       I know that 921217 is the date and that 155244 is the time the message 
       was sent/received, but I don't know what .22202e59 means (given - I 
       knew the name of the sender from the other header information that was 
       excluded).  If there is some documentation or books around that 
       describe this example as well as other aspects of e-mail and e-mail 
       headers, I would be glad to find out how to access it.  Thanks in 
       advance.

You can ftp to nic.ddn.mil and look in the "rfc" directory, where you
should pick up RFC822, which is the overall reference for Internet-
compliant mail.

On the other hand, the exact contents of Message-Id headers are
implementation-dependent.  There is no reason why a Message-Id must
contain time-of-day or anything else that's readily identifiable.  As
a practical matter, and since the goal of a Message-Id is to give a
guaranteed-unique identifier, a combination of the date/time plus some
process identification information, for the process which created the
message, is typically used.  Hence, if you're on a UNIX system running
(e.g.) sendmail as a mail transport, the "22202" is probably the UNIX
process id of the sendmail invocation which took care of the message.
I can't place the "e59" portion, however.

--karl

Re: e-mail headers

#3434

Author: Bruce Lilly
Date: Sun, 20 Dec 1992 22:57

11 lines
855 bytes

In article <BzGwuK.AFD.2@cs.cmu.edu> Karl_Kleinpaste@cs.cmu.edu wrote:
>
>You can ftp to nic.ddn.mil and look in the "rfc" directory, where you
>should pick up RFC822, which is the overall reference for Internet-
>compliant mail.

And RFC1123, which amends RFC822.

-- 
	Bruce Lilly		blilly!bruce@Broadcast.Sony.COM
					...uunet!sonyusa!sonyd1!blilly!bruce

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