nanog mailing list archives

Re: Recording the return path (was Re: Clueless anti-virus products/vendors)


From: "Per Heldal" <heldal () eml cc>
Date: Mon, 12 Dec 2005 13:44:50 +0100



On Mon, 12 Dec 2005 11:08:14 +0000, Michael.Dillon () btradianz com said:
[snip]

Not quite the only way. If a postprocessing step is needed,
it is trivial for the SMTP server to record any return path info
that it knows in order for the post-processor to be able to
send DSN's as accurately as the SMTP server itself.

What we have here is yet another failure of imagination.


Has anybody claimed that post-processing within the SMTP-server is
better than postprocessing done elsewhere? The issue was
in-line-processing vs post-processing.

No information you can collect from the SMTP-session or elsewhere can
ever compete with the accuracy in notification gained if you reject the
message in-line and leave the responsibility for sender-notification
with the sending MTA.

//per
-- 
  Per Heldal
  heldal () eml cc


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