> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On Behalf Of Gervase
> Sent: 03 June 2004 14:24
> To: [EMAIL PROTECTED]
> Subject: RE: [Clamav-users] Re: Freshclam not responding
> 
> On Wed, 2004-06-02 at 15:49, Ron Snyder wrote:
> 
> > if you do a 'dig database.clamav.net' or a 'host 
> database.clamav.net', 
> > do you get useful answers?
> 
> No.  Both merely say:
> "truncated, retrying in TCP mode,
> timed out -no servers could be reached".
> 
> I am baffled, especially by the fact that the problem first 
> occurred for no apparent reason while happily using Clamav 
> 0.70.  Upgrading to 0.71 didn't help.  I agree with you and 
> others that the firewall is the most likely culprit but 
> turning it off didn't help.  Nor did changing ISPs. I have 
> not made any amendments to freshclam.conf, nor to clamav.conf 
> (except for the necessary addition of # before example.  We 
> seem to have eliminated everything.
> 
> I think that I have reached to end of my technical ability 
> and have tried your and others' patience enough so will start 
> from scratch with a reformat and reinstall.
> 
> I am most grateful to you and all who have helped.  Although 
> the problem is not solved, I have learned a lot and maybe one 
> day I shall have enough knowledge to help others lower down 
> on the learning curve.
> 
> Gervase

It's a firewalling problem.  Many sysadmins mistakenly think that DNS
queries only use UDP port 53.  You need to allow TCP port 53 out (and the
response back) too.

See http://www.intac.com/~cdp/cptd-faq/section2.html#ports for the
explanation.

Cheers,

Phil

----
Phil Randal
Network Engineer
Herefordshire Council
Hereford, UK


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