Sporatic DNS resolution. 2005-11-30 - By Mike Kercher
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You might consider installing a caching DNS server on your mail server.
Mike
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From: taroon-list-bounces@(protected)
[mailto:taroon-list-bounces@(protected)] On Behalf Of Elam Daly
Sent: Wednesday, November 30, 2005 8:03 AM
To: Taroon-list@(protected)
Subject: Sporatic DNS resolution.
Hi all,
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.
Thanks,
Elam Daly
Whiteware Inc
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