2009/5/22 Steve <steve.h...@digitalcertainty.co.uk>: > This 'BSMTP' munged MTA looks to offer very little more than Postfix > save for some Rate Control/Throttling/Better logging ? From my early > explorations with Postfix, it can mostly do all of this anyway or am I > missing something?
We've also pulled apart a well-known anti-spam appliance at work. That wasn't my project, so I don't know if we're talking about the same one, but my guess is that the appliance could be using an older version of postfix that's less fully-featured. Upgrading newer versions of the appliance to newer versions of postfix would mean actually doing some real *work*... > The real question I guess I am asking - is it possible to have three > instances of Postfix running on the same box, listening on different > ports, with separate queue directories? Actually, it would be more > accurate to ask HOW someone would implement this and what benefits it > could give in production? Before multi-instance support in 2.6 you'd just make yourself a separate set of directories, tweak your configuration a bit and make another initscript. The benefits depend on what you want to do; sometimes you can't get exactly what you want out of a single instance; one example might be sender-dependent trickery, where corporate policy dictates that you need to do something. The "something" probably isn't possible in a single instance of postfix because it's irrelevant to getting the job done (sending mail). Multiple instances may also make it easier to manage a complex setup (eg. performing filtering, scanning, etc).
