On Wed, Oct 28, 2020 at 08:45:30PM -0400, Alex wrote:
> > > Would I have to have multiple instances of postfix running to be able
> > > to control which IP is used for which domain?
> >
> > Give each instance its owninet_inteerfaces setting.
> >
> > This is covered in
> > http://www.postfix.org/BASIC_CONFIGURATION_READNE.html
>
> Is there a document that provides a bit more explanation as to how
> this would work? Should I also be reading MULTI_INSTANCE?
If you want to logically partition your MTA into separate personalities
by domain, rather than operate a single MTA multiple domains (why?),
then multi-instance is the more robust approach when you have a separate
dedicated IP address for each domain for both inbound and outbound mail.
Within a single instance, Partitioning inbound email is of course
comparatively simple, but partitioning outbound email, including bounces
is not.
--
Viktor
