Hello, Michael,

Thank you very much for the explanations.
Hmm but I thought I had disabled the spamassassin milter for postfix and then 
it would have taken just as long... but i can be wrong. In any case I'm curious 
about the behaviour after the update.

Best regards
Dirk



blackpoint GmbH - Friedberger Straße 106b - 61118 Bad Vilbel

-----Ursprüngliche Nachricht-----
Von: Blueonyx <blueonyx-boun...@mail.blueonyx.it> Im Auftrag von Michael Stauber
Gesendet: Donnerstag, 25. Juni 2020 18:31
An: blueonyx@mail.blueonyx.it
Betreff: [BlueOnyx:24039] Re: 5210R - Delay in postfix processing/delivery

Hi Dirk,

> one of our customers now uses postfix as mail server.
>
> But now there is a delay when sending mails via a mail client. No
> matter if you use Roundcube or if you come from a customers mailclient
> from
> outside:

I looked at this during the last few days. Your client is (as far as I
recall) using the AV-SPAM as well? The problem becomes obvious when you look at 
both /var/log/maillog and /var/log/messages while sending an email via 
RoundCube (for example).

The way it currently is the AV-SPAM unintentionally *does* scan outgoing emails 
as well. Even if the checkbox for that purpose isn't checked in the GUI. That's 
not how it's supposed to be - of course.

Each of this checks takes a few seconds. Milter-Greylist directly says:
"Nah, this is local. Ignore." Milter-GeoIP says: "Local, I'm not looking at 
this." Clam AV also does it's thing (adding 1-2 seconds for firing that monster 
up) and then SpamAssassin does the whole shebang of local and non-local tests: 
DNS lookups, RBLs, all rules are applied, AWL and Bayes are taken into account 
and that keeps the "Sending ..." notice in RoundCube open for the whole time 
until Postfix finally accepts the email. The SpamAssassin run alone might add 
3-8 seconds. That's where the sluggishness comes from.

I figured out how to turn this off and am working on an updated base-email and 
AV-SPAM PKG. I might have it ready later today - if not then tomorrow.

--
With best regards

Michael Stauber
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