On Mon, Nov 29, 2010 at 05:39:40PM -0500, Stirling, Scott wrote:
> http://www.postfix.org/MULTI_INSTANCE_README.html
>
> My client has Postfix 2.3.3. Must I update to 2.6+ to run multiple
> instances side-by-side?
No, but you won't have the postmulti(1) tooling at your disposal.
> Could I manually create an instance by, e.g.,
> creating an /etc/postfix-foo with main.cf and master.cf, and configure
> them to use different files and directories?
Yes. You'll need to manually tweak "alternate_config_directories" if
you need "postqueue" and "postdrop" to function for non-default instances
when invoked by non-root users. Also upgrades may not automatically
find and upgrade all instances.
> Updating the postfix
> version might be a good idea for other reasons, but it would increase
> the scope of the issue a bit.
If you want reasonably current TLS support and a Postfix release that
is still maintained, upgrading is not a bad idea.
--
Viktor.
