September 15, 2020 11:52 PM, "Bill Cole" <postfixlists-070...@billmail.scconsult.com> wrote:
> On 15 Sep 2020, at 16:55, Patrick Proniewski wrote: > >> Hello, >> >> What would be the best way to hold an incoming email that match both > >> criteria From=foo and >> To=bar? >> First I thought about header_checks with something like: >> >> if /^From:.*foo.*/ >> /^To:.*bar.*/ HOLD >> endif >> >> but obviously it can't work as headers are processed 1 by 1. > > Right: header_checks CANNOT do this. > > This requires a comprehensive filtering tool. Because milters can return a > "quarantine" reply, a > milter would be the obvious choice. MIMEDefang is one which could do this > rather easily. Thanks Bill, I'll take a look at MIMEDefang. regards, patpro