We run an Active/Passive cluster of Exchange 2003 SP2 and Outlook 2003 on the client side.
Recently we have been getting pop-up message saying "Outlook is trying to retrieve data rom the Microsoft Exchange server "serverclustername.domain.
We have been able to correlate this messages with an increase of the SMTP traffic which can be seen in the attached graphic. When we get the pop-up message the SMTP traffic is spiking.
Does the traffic for SMTP looks out of proportion or could be causing this issue? Are there any other ways within Exchange or somewhere else that could help me to troubleshoot this problem?