On 24.09.19 12:11, Paul van der Vlis wrote:
>I am using now much of your setting and it seems to help. Thanks a lot!

On Tue, 24 Sep 2019 at 11:31, Matus UHLAR - fantomas <uh...@fantomas.sk>
wrote:
I would just like to note that all those reject_rbl_client directives are
prone to errors when any of those blacklist fails.

On 24.09.19 11:54, Dominic Raferd wrote:
An occasional individual blacklist lookup failure is not a problem, and is
rare (except for b.barracudacentral.org). I have not felt the need for
postscreen but of course it is a good tool: I prefer to block by ip last
and to log helo, envelope sender & recipient as well as client ip. This
puts a little more load on the server, but information is power.

I'm not talking about temporary failures when resolving blacklists.  I am
talking about sender IP addresses appering in random blacklists (probability
increases with number of used blacklists), shut down blacklist returning
positive addresses with all lookups (happened a few times in the history)
etc.

--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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