On 22/02/2021 21:59, G.W. Haywood via clamav-users wrote:
[SNIP]
If you're going to run your own mail server, ALL this stuff needs to
be at your fingertips. If it isn't, you're just going to be getting
in your own way (and in everyone else's way).
Also wondering in main.cf (postfix) is the only place I need to add
Clamav directives. master.cf has a spot for Spamassassin as a
"filter" and commented out stuff for amavis.
https://www.oreilly.com/library/view/postfix-the-definitive/0596002122/ch04s05.html
Don't forget that I don't use Postfix, so check everything I've said
is right for your installation. There may well be little quirks with
Postfix that I don't know about. It's all very similar with the MTA
that I do use (Sendmail) but I can't be quite so sure with Postfix as
I can with Sendmail.
Fundamentally you need Postfix to know how to talk to clamav-milter,
clamav-milter to know how to talk to clamd, and the same in the other
direction; clamd needs to know how to talk to clamav-milter, and the
milter needs to know how to talk to Postfix. That's more or less all
there is to it as far as the communications between the processes is
concerned, but then you have to configure it all to do what you want
it to do of course. I see that you've started on that already with
things like detecting PUAs.
The canonical information on how to use milters in Postfix is in the
Postfix source tree: README_FILES/MILTER_README. There's also an HTML
version.
And I would also second the Dove book Ged links to above, if you are
about to start fiddling with Postfix configuration. It's old, but it's
probably the most complete, and of course, when in doubt look at the
source, <http://www.postfix.org/> has a lot of resources.
Cheers,
Gary B-)
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