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