On Tue, Jul 29, 2014 at 03:10:59PM +0000, Xie, Wei wrote: > Here we have a question about postfix. When the message passes by Postfix, > can Postfix automatically add line "Resent-From: <OSU email address>" in > the header?
That would be wrong. "Resent-From:" is appropriate when a user takes a message delivered to his mailbox (possibly long after initial delivery) and resends it to another user (typically not an original recipient). It is not appropriate for simple forwarding to a recipient's mailbox. Whatever in-band signalling you might need should be something other than "Resent-From" (usually accompanied by Resent-To, Resent-Date, and Resent-Message-Id). If the forwarding is via local(8) aliases, the "Delivered-To:" header may be something along the lines of what you're looking for. There are also various extensions to Postfix to handle SPF and SRS. -- Viktor.