Alex:
> Hi,
>
> > > > > 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.
>
> I definitely do not want to have to implement multiple instances. I
> did it more than 15 years ago and it's certainly an involved process.
Postfix has improved over time. Multiple instances are much easier now.
You can start/stop all or some, and they share executables.
> > Within a single instance, Partitioning inbound email is of course
> > comparatively simple, but partitioning outbound email, including bounces
> > is not.
>
> Would you explain how I can bind a hostname to an IP and send mail for
> a specific domain using that IP?
See my other response. It is more complicated than multi-instance.
Wietse
