> Am 20.10.2016 um 14:11 schrieb Patrick Ben Koetter <p...@sys4.de>: > > * Wietse Venema <postfix-users@postfix.org>: >> Christian Ro??ner: >>> Possible situation: Central SMTP-hub that gets connections from >>> MX-ins and internal servers, ... >> >> I have a simpler solution: separate those mail streams with separate >> MTA instances. That avoids the complexity of adding exceptions to >> main.cf, milters, ... >> >> Different streams can have different filters/milters, which is more >> flexible than a milter on/off switch. >> >> The two MTA instances can run on the same host (bound to different >> IP addresses) or on separate hosts. > > I expected this answer and obviously it makes sense to suggest this solution > at first. We came up with that approach too, but had to give it up once we had > a closer look at the environment the service runs in. > > It is not always possible to use an additional IP address or port. Christian's > RFE deals with exact these scenarios. We would use the simplier approach if it > were possible.
I can confirm. There exist systems, were complexity raises, if you add a N-th listener to Postfix. My idea was based on "smtpd_client_event_limit_exceptions". Is there some hope that this feature might be implemented? I know milters exist for a longer time but my feeling is that popularity first came up in the last couple of years and it seems milter become more and more important. Therefor many systems do not use one or two milters at the time. I know about people who use up to ten milters in a system. Some more flexibility on Postfix smtpd-side would be really helpful here. Thanks in advance Christian -- Erlenwiese 14, 36304 Alsfeld T: +49 6631 78823400, F: +49 6631 78823409, M: +49 171 9905345 USt-IdNr.: DE225643613, https://www.roessner-network-solutions.com
