On Fri, Aug 14, 2015 at 11:53:41PM -0700, NFXDD wrote:
> I have been trying to give postfix multi instance a go for the past week.
> With this came to the conclusion that going with a multi instance solution
> where one instance for incoming mail and another for outgoing seems to be
> good performance wise especially for a mass mailing setup. But if i'm wrong
> feel free to tell me so.
Separating inbound and outbound configurations is often sensible.
Some care is required when routing outbound mail (bounces, ...)
sent by the inbound instance, or conversely inbound mail sent by
the outbound instance. I generally inject these via a port other
than 25 (to avoid "mail loops back" errors, and simplify access
control) that is not open to external access.
> Now, I have the default instance and I have another instance (postfix-out)
> but I am just not getting what I should change exactly for both instances to
> make it work as intended. Where default instance should receive all incoming
> mail and postfix-out should do all the sending.
The advice in:
http://www.postfix.org/MULTI_INSTANCE_README.html
is to configure the default instance as a null-client, and to
have both postfix-in and postfix-out as non-default instances.
--
Viktor.
