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From: Viktor Dukhovni (postfix-usersdukhovni.org)
Date: Thu May 02 2013 - 18:39:04 CDT
On Thu, May 02, 2013 at 11:14:23PM +0200, Michael Ionescu wrote:
> > "C" Multiple postfix instances is the preferred solution. Postfix
> > supports multiple instances on the same machine quite well. The
> > added overhead to the machine is negligible. There is some extra
> > administration, but the upside is you can easily do things that are
> > not possible (or really ugly) in a single instance.
> > http://www.postfix.org/MULTI_INSTANCE_README.html
> > -- Noel Jones
> Thanks Noel. While this may be generally correct, I come from using
> qmail and having to compensate its shortcomings by both extensive
> patching and ultimately placing multiple installations on each machine.
> I do not want to go back to having multiple MTA installations on a
> machine because of the drawbacks in administration, even in view of
> postmulti. Therefore I am explicitly asking about the other solutions I
> have in mind and am open for ones that I have not thought of.
Don't confuse multiple *configuration* instances with multiple
installation instances. You install Postfix just once. You edit
multiple configuration files (main.cf and perhaps master.cf in each
configuration directory), one per MTA role.
The postmulti framework takes care of the other details. Your bias
against multiple instances is irrational, you should be willing to