Motion for a new POST NSF AUP

Robert Moskowitz rgm3 at
Wed Nov 15 05:03:13 UTC 1995

At 10:56 AM 10/16/95 +0100, Havard.Eidnes at wrote:
>>    Another suggestion was that SMTP headers always contain the
>>    IP address.  I've seen this in quite a few mailers already.
>>    All we need is a slight modification to the SMTP Receipt
>>    standard.  This could be a Best Current Practice, quickly
>>    published!
>Hm, this is already covered.  RFC 1123 says:
>      5.2.8  DATA Command: RFC-821 Section 4.1.1
>         *    The FROM field SHOULD contain both (1) the name of the
>              source host as presented in the HELO command and (2) a
>              domain literal containing the IP address of the source,
>              determined from the TCP connection.

Big deal.  Since it is only SHOULD many mailers, like CDC's MAIL*Hub profess
not to support it, as it is not a MUST...

Robert Moskowitz
Chrysler Corporation
(810) 758-8212

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