Re: discrepancies between RFC821 and RFC822 (as amended by RFC1123) regarding Received headers

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#2656

From: John Gardiner Myers
Date: Sun, 10 Jan 1993 17:10

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bruce@blilly.uucp (Bruce Lilly) writes:
> 1)      RFC821 section 4.1.1 requires the "from" and "by" clauses, while
>         RFC822 4.1 lists them as optional.

[...]

> so if a message which arrives at an
> Internet site via some mechanism other than SMTP contains an RFC822
> Received header without a "from" or a "by" clause (or without both),
> it is a technical violation of either RFC821 or RFC1123 to transmit
> the message via SMTP to another Internet site

I disagree.  RFC 821 specifies the grammar of the time stamp line a
server must insert at the beginning of the mail data (4.1.1.DATA).  I
see no prohibition in RFC 821 against transmitting a message already
containing Recieved: headers that do not match the <time-stamp-line>
grammar.

-- 
_.John G. Myers		Internet: jgm+@CMU.EDU
			LoseNet:  ...!seismo!ihnp4!wiscvm.wisc.edu!give!up

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From: jgm+@CMU.EDU (John Gardiner Myers)
Newsgroups: comp.mail.sendmail,comp.protocols.tcp-ip,comp.mail.headers
Subject: Re: discrepancies between RFC821 and RFC822 (as amended by RFC1123) regarding Received headers
Message-ID: <gfICIOa00WBwQPAmVQ@andrew.cmu.edu>
Date: 10 Jan 93 17:10:18 GMT
Article-I.D.: andrew.gfICIOa00WBwQPAmVQ
References: <1993Jan10.162048.22777@blilly.uucp>
Organization: Systems Group 97, Carnegie Mellon, Pittsburgh, PA
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