 | | | Sporatic DNS resolution. | Sporatic DNS resolution. 2005-11-30 - By Jussi Silvennoinen
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> We have a Redhat ES server that has a 3 entries in it's /etc/resolv.conf
> file. One is the local DNS server, and the other two are our ISP's DNS
> servers.
>
> The odd thing is that up until a month ago every thing was working fine, but
> now we are suddenly having name resolution problems and they aren't
> consistent. The ES server is also our mail server and it can't consistently
> resolve namespaces for other mail servers, sometimes it does other times it
> simply times out. Our other server in the company, or other computers for
> that matter have problem resolving names using the exact same DNS servers.
>
> Isn't /etc/resolv.conf the only file that matters in this regard? Can
> anyone suggest some test to try and pinpoint what's going on? I've tried
> the usual: ping, dig, etc.
Congestion in your pipe? Overloaded DNS? Half-duplex ethernet? Did the
word 'no' drop out from the last phrase of the second paragraph?
--
Jussi
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