Hi, I am experiencing regular slow responses from our Exchange server especially at around 4PM each day. Sometimes this shows as "Attempting to retrieve data from Exchange". Sometimes the delay can be as long as 10 minutes. I have examined the Event logs on the server and nothing appears to be faulting apart from the ""Microsoft Exchange couldn't find a certificate that contains the domain name" error. It may be my lack of understanding but I cant see any other faults. I have decreased the size of my own mail box and enabled archiving and still the problem persists. I can also see no indication of a Network error. Can anyone offer advice as to what may be causing this issue?
All clients are running Win7 Pro and Outlook 2010.