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- Join Date
- Jul 2008
which mail server can add X-Envelope-To header (from RCPT TO:)
I also need some advice (or URLs) on how to configure the various parts to accomplish this...:
When mail is received, examine the RCPT TO: (NOT the "To:" field) of the incoming mail session and check a LONG list* of "virtual addresses". (Not just an alias, but email@example.com) If mail is addressed to an email address not on the list*, return Unknown User immediately.
(* This list needs to be a text file for easy and frequent editing and updating.)
Would a long text file of procmail directives work here? Or does procmail processing occur after the session is complete? (which means the originating server's message/spam attempt didn't get rejected until after it "successfully" sent it. Boo.)
I'm currently using Ubuntu.