https://blog.clamav.net/2021/07/psa-freshclam-database-download-issue.html
— Sent from my iPhone > On Mar 9, 2022, at 16:25, clamav.mbou...@spamgourmet.com wrote: > > ReceiveTimeout=30 is probably the one causing you problems. I was bitten by > that when installing ClamAV on an Ubuntu-based system last year. For me, on > a ~16Mpbs downlink home broadband connection, it took longer than that to > download the signatures, so would repeatedly time out and retry. I think in > that case the retries occur every 5 seconds, regardless of other settings > specifying the frequency of update checks, since it hadn't actually > successfully updated. As I understand it, checking every hour shouldn't > usually be a problem - its the retries triggered by the timeout that cause > the rate-limiting to kick in. > > Having mentioned it here myself almost a year ago myself, it turns out that > the default built into ClamAV sets ReceiveTimeout=0, which means no timeout. > However, the Ubuntu 16.04 and 18.04 packages create an initial configuration > with it to 30. I think the Ubuntu 20.04 packages now set it to 0, the same > as ClamAV's default, but it may be that you've inherited a configuration from > an older installation - or perhaps KDE Neon provide their own packages with > the default still set to 30. So it seems that 30s default isn't actually the > ClamAV team's fault. > > What does seem to exacerbate the problem is that, when the download times > out, it retries after 5 seconds so you quickly get blocked by the > rate-limiting and have to wait for that to reset before trying again after > fixing the config. But, as was explained to me, there are some cases where > retrying immediately makes sense and freshclam can't necessary determine > that, so always waiting a longer period (or until the next update check is > due) isn't necessarily the right thing to do either (and in its default > configuration a timeout wouldn't happen anyway). > > Mark. > > > Jerzy Witwinowski via clamav-users wrote: >> @ Maarten Broekman - I'm using the version 0.103.5 which, I think, is the >> current version in KDE Neon repos (KDE Neon being based on Ubuntu 20). But >> what I did yesterday (manual tuning of the configuration file, lowering the >> number of times per day the updates are fetched and increasing the receive >> timeout) helped. This evening, when I started my computer after returning >> from work, I checked the version of the virus database and saw that ClamAV >> had managed to update it. >> @ G.W. Haywood - Hopefully after manual tweaking of the config file >> everything works again as it should (as I explained in my answer to Maarten >> Broekman above). And it's not that I've been neglecting the security... It's >> just that as everything had been working smooth and fine since I've >> installed ClamAV many years ago, I've stopped manually checking if >> everything was still OK (because why would it stop working after all those >> years?)... My bad. >> Anyway, three things: >> 1. I would like to apologize for writing BEFORE I could verify if the manual >> tweaks would work once my cool-down period lifted. >> 2. Thank you all for your patience and your help. >> 3. There is still one question that puzzles me: why the default >> configuration of ClamAV (checking for updates every hour, Retrieve Timeout >> set to 30) is designed in a way that leads directly to the ban by the CDN >> and renders the software useless? >> _______________________________________________ >> clamav-users mailing list >> clamav-users@lists.clamav.net >> https://lists.clamav.net/mailman/listinfo/clamav-users >> Help us build a comprehensive ClamAV guide: >> https://github.com/vrtadmin/clamav-faq >> http://www.clamav.net/contact.html#ml > > > _______________________________________________ > > clamav-users mailing list > clamav-users@lists.clamav.net > https://lists.clamav.net/mailman/listinfo/clamav-users > > > Help us build a comprehensive ClamAV guide: > https://github.com/vrtadmin/clamav-faq > > http://www.clamav.net/contact.html#ml
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