On 02.05.2013 17:57, Noel Jones wrote: >> [...] >> prequeue proxy virusfilter [...] precludes >> rewriting the Received: header [...] >> QUESTION 1: Is this correct? >> [...] >> QUESTION 2: Is there a definitive overview of all the ways postfix >> detects loops and at what stages these are employed? (I mean aside from >> the source code.) :-) >> [...] >> QUESTION 3: Can one make sender-based-routing conditional [...]? >> QUESTION 4: Does this also work with an smtpd configured with a >> pre-queue proxy filter? >> [...] >> Thanks for your insight! >> Michael >> > > > "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. Michael
