I have six Exchange 2010 CAS servers, one of which generates the OAB and Group Metrics. The server that generates the metrics has a share with the files required.
Our users connect via a load balancer and some of our users noticed that sometimes when sending mails to specific groups that the large audience mailtip was not being generated.
Looking at the client access servers I can see that three out of the six do not have the bin, xml and changedgroups.txt file present in the ClientAccess\GroupMetrics directory.
The file distribution service is running on all servers, and as a test was restarted but still none of the metric files are copied/created to these three servers.
I've been searching online the logs etc but I cannot find the reason for why the files are not present in three of the servers.
They are part of the groups who have permission to access the metrics share on the generating server, and the share can be opened on each of the servers using the unc path.
Has anyone seen similar and how did you resolve it, or can suggest logging etc for troubshooting