> On Aug 12, 2017, at 1:05 PM, Lorenzo Petracchi <lorenzo.petrac...@unifi.it> > wrote: > > Hello, does anybody know if there is a way to force the header (From:) to be > rewritten so that it is equal to envelope (MAIL FROM), just for outgoing mail > and sasl authenticated sender?
This would lose the associated display name, as Postfix has no way to reconstruct that just from the MAIL FROM. It might be better to prepend a "Sender:" header on port 587. Some MUAs will display "From: <rfc822.sender> on behalf of <rfc822.from>" (this is one of the few actually nice features of Outlook from my perspective). Otherwise, if you use header-checks to delete the "From:" header, a new one will be added based on the envelope sender. You can do this on port 587, where all and only SASL authenticated users sending outbound email should be seen. -- -- Viktor.