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?

On Thu, 24 Feb 2011 23:22:39 +0000, Chuck_P2101 wrote: >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? Has your DNS protected the A record agains modification? Change the protection to allow any authenticated user to modify the A record. The protection may be at the DNS zone level. You may have to allow non-secure updates. --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

Hi, Does the error message keep popping up in Event Log or occur only once? Since the servers can work normally, I suggest you run ExBPA to check whether any problem can be detected. Thanks. NovakPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Thanks for the answers. If I try to run ipconfig/registerdns on the server, would I expect this to work if the A records were protected? And when we say the A records are protected, are we basically saying that Dynamic DNS is disabled? Finally, overall, what is the effect of these records not registering? As I mentioned, the servers do seem to work ok.

Hi, Based on my research, I suggest you refer to the following article to troubleshoot the issue. http://support.microsoft.com/kb/871111 Thanks. NovakPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.