Received: from localhost by CS.UTK.EDU with SMTP (cf v2.9s-UTK) id XAA10487; Sun, 7 Jan 1996 23:23:59 -0500 Received: by CS.UTK.EDU (bulk_mailer v1.3); Sun, 7 Jan 1996 23:22:25 -0500 Received: from apb.iafrica.com by CS.UTK.EDU with ESMTP (cf v2.9s-UTK) id XAA10026; Sun, 7 Jan 1996 23:22:22 -0500 Received: (from apb@localhost) by apb.iafrica.com (8.6.12/8.6.9) id TAA20891; Sun, 7 Jan 1996 19:26:09 +0200 Date: Sun, 7 Jan 1996 19:26:07 +0200 (GMT+0200) From: Alan Barrett To: John Gardiner Myers cc: drums@cs.utk.edu Subject: Re: loop detection In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII > To do loop detection by examination, an MTA would not only need to > scan the trace information for the signature of the MTA, it would also > have to look for a cryptographic hash of the evelope recipient set. I agree. > One possible approach would be to replace the function of Received: > with a different header, defined to be extensible. This would, > however, probaly be more trouble than it's worth. We could simply define the Received header as being extensible. Individual MTAs can already get around this by adding a structured comment to the Received header, or assing an X-* header. --apb (Alan Barrett)