On 26.09.25 14:45, Paul Kosinski via clamav-users wrote:
You said, "I believe configuring milter is much easier and safer than
playing with external programs like you described."
Maybe, but the ability to combine separate external programs to accomplish
a task is not "playing"; rather it is part of the point of flexible
systems like GNU/Linux.
If Postfix and its Milter have builtin all the power of Procmail (with its
Regex based rules), Formail, and Perl (with its CPAN modules), then that
power is well hidden in the many, many pages of Postfix docs.
It's funny when you first praise possibility to combine separate programs
but immediately after that you want to do everything with one program.
Thus, I have added my own Perl scripts, and, of course, lots of Procmail
Regexes to accomplish exactly what I want in email post-processing without
having to try to find some Postfix option that might be adequate.
Of course you can do (nearly) everything by yourself, but in most cases people
will wonder why not use existing options...
Postfix and multiple milters (clamav-milter, amavisd-milter, milter-regex)
support much of what you describe. However, this discussion belongs to
postfix and not clamav mailing list.
For example, using Procmail, I can deliver a blind copy of an inbound mail
with a particular "To:" AND "From:" to another local user (e.g., an
archive) at the last moment before the LDA is invoked. (IIRC, Milter only
operates "before queue".)
On the other hand, using just Postfix options to strip "Received:" headers
from outbound mail (to avoid revealing LAN details) while preserving them
on inbound mail (to reveal spam and malware sources) was unexpectedly
tricky.
Finally, our Postfix configuration has long used significantly modified
main.cf and master.cf, not to mention transport(.db) and a frequently
updated valias(.db). Furthermore, setting up the main.cf was certainly
not what I would call "easy", as the number of its options it has puts the
number of ClamAV options to shame.
On Tue, 23 Sep 2025 09:29:25 +0200
Matus UHLAR - fantomas via clamav-users <[email protected]> wrote:
On 22.09.25 16:19, Paul Kosinski via clamav-users wrote:
>I don't know if Postfix even had builtin Milter support when I first set up my
email.
correct, milter support was added to posftix in 2006 according to changelog.
> But in any case, today's Milter features (and specs) are much more
> complicated than I really need (since it's an email system for a couple of
> tiny domains).
I believe configuring milter is much easier and safer than playing with
external programs like you described.
_______________________________________________
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Matus UHLAR - fantomas, [email protected] ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
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