I'm having a weird problem. Let me explain my environment.
Exchange 2010 SP3 RU10, 20 CAS servers in this site, NetScaler Load Balancer. Outlook 2010 & 2013.
We have no problem with outlook cached mode (most of the time), but online and citrix users are keep disconnecting from the exchange server. No issues when we bypass the load balencer. No issues found in the RCA logs.
At this point captured the netmon from client and server end, and sent it to MS.
Any suggestions will be appreciated.