Dear, I have Exchange server all the role , AD , DNS install on HP E5520 2.7 GHZ 6GB Ram , the storage group size about 130GB , 200 mail box connect to this server. This few week suddenly client can not connect to the Exchange , how ever the event log haven't show any problem , how can I trouble shoot it ? Thanks and Regards, Ricky

What happens when they try?Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

User cannot connect to outlook , necessary reboot the server

All the Exchange services started. After restart all service arework properly

Is this still an issue after restart?James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Hello, Any update? Best Regards, Lisa

After restart all service is work properly , the event log haven't show any problem so I don't know how to trouble shoot