[clamav-users] How to boost clamav? Reloading database results in a talking timeout?

Henrik K hege at hege.li
Sat Aug 31 10:32:22 EDT 2019


The reload bug has been known for years, even has a ready patch.

https://bugzilla.clamav.net/show_bug.cgi?id=10979

But nothing you can do about it, ClamAV devs have a mind of their own.

Atleast servers in your scenario will (hopefully) retry sending.


On Sat, Aug 31, 2019 at 04:25:05PM +0200, Thomas Barth via clamav-users wrote:
> Hallo Mailinglist,
> 
> sometimes I get in Postfix the error messages "451 4.3.0 Error: queue file
> write error". There is a warning timeout talking to localhost:10024 (Amavis)
> 
> 
> Aug 31 14:14:19 mx2 postfix/smtpd[15861]: connect from
> unknown[177.37.96.254]
> Aug 31 14:14:20 mx2 postfix/smtpd[15861]: NOQUEUE:
> client=unknown[177.37.96.254]
> Aug 31 14:16:02 mx2 postfix/smtpd[15861]: warning: timeout talking to proxy
> localhost:10024
> Aug 31 14:16:02 mx2 postfix/smtpd[15861]: proxy-reject: END-OF-MESSAGE: 451
> 4.3.0 Error: queue file write error; from=<BillyThompson at lookandwellness.it>
> to=<yr at domain.de> proto=ESMTP helo=<lookandwellness.it>
> Aug 31 14:16:02 mx2 postfix/smtpd[15861]: disconnect from
> unknown[177.37.96.254] ehlo=1 mail=1 rcpt=1 data=0/1 commands=3/4
> 
> (Not hiding the from address, it s used by a spammer :))
> 
> Normally postfix gets a response after 3 secondes.
> 
> In the clamav.log I see at the same time, that reloading the database takes
> up to two minutes.
> 
> /var/log/clamav/clamav.log
> Sat Aug 31 14:14:15 2019 -> Database correctly reloaded (10971844
> signatures)
> Sat Aug 31 14:14:15 2019 -> Reading databases from /var/lib/clamav
> Sat Aug 31 14:14:15 2019 ->
> /var/lib/amavis/tmp/amavis-20190831T125532-12347-lWbaS7Ci/parts/p001:
> Sanesecurity.Scam.12584.UNOFFICIAL(00000000000000000000000000000000:6617)
> FOUND
> Sat Aug 31 14:16:13 2019 -> Database correctly reloaded (10971844
> signatures)
> Sat Aug 31 14:16:13 2019 ->
> /var/lib/amavis/tmp/amavis-20190831T120830-10930-zSEWR54L/parts/p001:
> Sanesecurity.Scam.12559.UNOFFICIAL(00000000000000000000000000000000:6449)
> FOUND
> 
> Is reloading a database blocking the e-Mail scanning? So how can I boost
> this process? It's a virtual server with 100% ssd and 6 cores (Intel(R)
> Xeon(R) CPU E5-2630 v4 @ 2.20GHz) and Debian Buster.
> 
> 
> Best regards,
> Thomas Barth
> 
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