Mike Ray:
> The basic condition I'm trying to deal with is a message that has
> a certain subject *and* is destined for a particular address.
Hi, I wrote Postfix. Postfix does not do combinations of headers
and other stuff. Such things are supposed to be "outsourced" to
external filters such as Amavisd, Milters, and the like.
You might be able to cobble together something with header_checks
and such, but the solution falls apart when a requirement changes.
> Secondly, I've heard that it is "better" to use milters (before-queue
> filters?) as opposed to content filters (after-queue filters?),
There is no fundamental difference in functionality between Milters
and other before-queue filters. The main difference with after-queue
filters is that an after-queue filter can be chosen dynamically.
Wietse
