301301Re: Can Postfix automatically add line "Resent-From: " in the header?
- Jul 29, 2014Xie, Wei:
> Greetings,How would Postfix know out that mail is forwarded from OSU Microsoft
> Our OSU State University uses Microsoft exchange servers as our
> main email system. Many users' email accounts are forwarding
> accounts, which forward emails of name.n@...<mailto:name.n@...>
> (i. e. smith.8113@...<mailto:smith.8113@...>) to other
> email systems such as gmail, yahoo, Hotmail, Buckeyemail, etc.
> Before these outbound emails are leaving from Ohio state university,
> they are scanned by our Security DLP (Data Loss Protection) servers
> on which MTA Postfix is running.
> 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?
exchange servers? Is it mail with a non-OSU envelope sender from a
system inside OSU? Must it also have a non-OSU envelope recipient?
If the rule is complex, then I recommend using an external content
filter. Amavisd-new supports policies that trigger on all kinds of
message properties. Postfix just an MTA.
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