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DNS related errors on Exchange

Posted on 2011-02-24
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Last Modified: 2012-05-11
Hi

I'm running Exchange 2007 SP2 on Windows 2008 Server. We use a UNIX based DNS system.

I have a couple of Exchange clusters - SCC - Active/Active/Passive.

On each of them, within the System Log, I see the following errors:

Error - Event ID 1196 - Failover Clustering
Cluster network name resource "Network name (Exch1SCC)" failed registration of one or more associated DNS names for the following reasons:
DNS signature failed to verify"

And

Warning - Event ID 1119 - Failover Clustering
Cluster network name resource "Network name (Exch1SCC)" failed to register DNS name Exch1SCC.domain.com over adaptor NIC1 for the following reason
DNS Signature failed to verify"

However, the servers themselves seem to be working fine.

Can anyone shed any light?
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Question by:chuckp2010
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craig_j_Lawrence earned 1000 total points
ID: 34975575
Does your Unix DNS system allow dynamic DNS? if not the warning is mostly caused by that fact. you can disable the dns registration on the network adapter that this cluster resource is using:

advancedtcp.png
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Author Comment

by:chuckp2010
ID: 34975625
Hi Craig

Thanks, so this won't actually cause a problem long term?

Also, question - how does register this connection's address in DNS tie in with the ipconfig/registerdns command? Do they effectively do the same thing? Does the UNIX system have to support Dynamic DNS in order to run ipconfig/registerdns? If not, can we just run /registerdns to fix this problem?
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Assisted Solution

by:Joking
Joking earned 1000 total points
ID: 34975710
/registerdns requires dynamic DNS support to work. That is a dynamic registration.
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Expert Comment

by:craig_j_Lawrence
ID: 34975781
Hi Chuck

ipconfig /registerdns is just the manual way to undertake the same task. The DNS server must support dynamic registration to support either method of registering DNS records. If not, you must manually add DNS entries to your DNS system
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