On Fri, Oct 28, 2016 at 04:49:12PM -0400, D'Arcy Cain wrote:
> So, my question, which I am afraid I already know the answer to, is can I
> examine the content of each message without interfering with the regular
> processing of the message. I know that I can set up two Postfix servers but
> that just seems even more kludgy than what I have.
Post-queue filters (content_filter) create a new filtered from each
original message. This is fundamental to their design.
Your other choices include pre-queue filters (smtpd_proxy_filter)
and milters. These do not create a new message and process messages
while they are being written to the original queue file.
--
Viktor.
