I just came across this neat tip in the clamav faqs:
>
> What does WARNING: DNS record is older than 3 hours mean?
>
> freshclam attempts to detect potential problems with DNS caches and
> switches to the old mode if something looks suspicious. If this message
> appears seldomly, you can safely ignore it. If you get the error everytime
> you run freshclam, check your system clock. If it is set correctly, check
> your dns settings. If those didn't help, try putting this at the top of your
> cronjob:
>
> host -t txt current.cvd.clamav.net; perl -e 'printf "%d\n",
> time;'
>
>
>
> The 4th field of the first line should be less than 3 * 3600 behind the
> output of the second line. If not, you have a caching DNS server somewhere
> misbehaving.
>
Thought it might be useful when troubleshooting caching dns servers.
--
-Eric 'shubes'
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