Hi, > > > > I thought I said transport... > > > > > > Postfix instance 1 > > > > > > main.cf > > > always_bcc = f...@example.com > > > > > > transport_maps > > > f...@example.com -> Postfix instance 2 > > > all other mail -> content filter -> Postfix instance 2 > > > > > > Perhaps a picture is worth 1e3 words. > > > > Does this mean modifying my existing default_transport to send mail to > > be filtered through a transport instead? > > No, it means a transport(5) table entry for special-casing > the BCC recipients.
Somehow I was confusing transports with transport maps. > You leave your default transport alone, it is used for normal > recipients. You route the BCC recipients via the transport > table. Now I understand. I've used transport maps a dozen times before but never thought about it this way. > Some explanation would help to understand which instance receives new mail, > which instances send into and receive from filter, and why you need three > instances. I created multiple instances to assign each one to a different IP for different domains to be able to associate their domain with separate MX records and separate body/header checks, etc. Thanks so much, Alex
