Mailinglist Archive: opensuse-security (21 mails)

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Re: [opensuse-security] What's up with clamav?
  • From: Christian Boltz <suse-security@xxxxxxxxx>
  • Date: Sun, 15 Feb 2009 15:31:22 +0100
  • Message-id: <200902151531.23468@xxxxxxxxxxxxxxx>

Am Sonntag, 15. Februar 2009 schrieb Carlos E. R.:
My configuration was using "", which yields a list
of hosts:

nimrodel:~ # host is an alias for is an alias for has address has address has address has address <======
The thing is that the daemon should be poling any server from the
list, but somehow it was trying the same broken server repeatedly.
When that server failed the algorithm should try another, but it
didn't. That's probably a bug.

The problem is how DNS round robin works. It is intended for load
balancing, not for being failsafe in case one of the servers is broken.

- clamav asks your nameserver for ""
- Your nameserver queries the upstream nameserver and gets multiple
results as listed above
- Your nameserver [1] picks one(!) of the results and gives clamav the
answer " ->"

A proper solution would be to make clamav asking for multiple
servernames, for example something like ""
and ""


Christian Boltz

[1] I'm not exactly sure about this fact - I hope there's someone who
corrects me if I'm wrong ;-)
The mission statement is simply 'world domination',
but we don't tell anybody. :-)
[Juergen Weigert in opensuse-project]
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