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Re: Strange determination of an error address in Zmailer 2.1.2



If a message with a Sender: field has gone through list expansion (RFC
1123 5.3.6(b)) the envelope return address and the Sender: field are
most likely to be different.  In this case, the envelope return
address is the correct place to send notifications and the Sender:
field is not.

If you don't have the message to look at, you haven't accepted
responsibility for delivering the message and should not generate a
notification.  If you detect an error during the SMTP reception, you
generate an SMTP error reply code and let the sender-SMTP generate the
notification.

-- 
_.John G. Myers		Internet: jgm+@CMU.EDU
			LoseNet:  ...!seismo!ihnp4!wiscvm.wisc.edu!give!up