Hi TechNet Community, In Server 08 Failover Clustering, in the Network Name Resource of our Clustered Mailbox Server (CMS), we see that its DNS Status is DNS operation refused . We manually created the DNS A record for the CMS, could this be why? Does Cluster Service not have permissions to update the record? Thanks for your insights, Mike

Perhaps: http://support.microsoft.com/kb/316239 SRV Records Cannot Be Registered on a DNS Server or: http://social.technet.microsoft.com/Forums/en-US/winserverClustering/thread/d0b4e92a-db78-4e79-80ff-c77595cededa#db805ffd-419d-4b36-a4b0-b50831359865 you may want to ask in the Clustering Forums if those links do not help as this is not an Exchange specific issue: http://social.technet.microsoft.com/Forums/en-US/winserverClustering/threads