On Tue, Mar 24, 2015 at 01:51:12PM +0100, MegaBrutal wrote: > I don't understand Postfix internals so deeply, but I see another > possible problem. Please correct me if I'm wrong! > > Basically, you want to run separate instances of Postfix in separate > processes, right? These instances (if not configured carefully) > probably put their queue files in the same directory > (/var/spool/postfix by Debian default). Isn't it possible that there > is a race condition between multiple instances, and an e-mail queued > by one instance actually gets delivered by another instance (thus > another IP)?
No. And these are not "instances of Postfix" sharing a queue directory. -- Viktor.