Steve Jenkins:
> Could this be achieved with a single instance of Postfix on one
> host machine configured for 2+ virtual domains with the same domain
> name ( mailer1.example.com, mailer2.example.com, etc.), or would
> it need to be two separate instances of Postfix running on the
> same host?
The idea of smtp_fallback_relay is to NOT share the mail queue.
> Regardless, if they two MTAs used the same smtp_bind_address,
> wouldn't that mean that only one of them would match the host's
> reverse DNS lookup, and that the other would have mail rejected
> by remote hosts that verify the reverse IP matches the sending IP?
smtp_bind_address sets the SOURCE IP address.
Wietse
