[694] in North American Network Operators' Group
Re: Motion for a new POST NSF AUP
daemon@ATHENA.MIT.EDU (Havard.Eidnes@runit.sintef.no)
Mon Oct 16 06:03:37 1995
To: bsimpson@morningstar.com
Cc: com-priv@lists.psi.com, nanog@merit.edu
From: Havard.Eidnes@runit.sintef.no
In-Reply-To: Your message of "Mon, 16 Oct 95 07:46:20 GMT"
Date: Mon, 16 Oct 1995 10:56:27 +0100
> 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.
...
DISCUSSION:
Including both the source host and the IP source address
in the Received: line may provide enough information for
tracking illicit mail sources and eliminate a need to
explicitly verify the HELO parameter.
Thus, this is not a new suggestion (RFC 1123 is dated Oct 1989).
Regards,
- H=E5vard
