I have an Exchange 2007 server that hosts multiple databases. There is one group of employees that seem to randomly lose connection to the Exchange server at the same time. When they lose connection they do not lose any other network connectivity. In fact the network tech found that there were no dropped packets when connectivity is lost. Another point of interest is that they all lose connectivity at the same time. The disconnect only lasts for a minute or so but it seems to be happening more frequently. No one else in the building is experiencing this issue. The only difference is the fact that they are on different databases on the same server. I have checked the event log on the exchange server and I find no errors that would account for this behavior. I have searched the databases on this website but have not found a solution as of yet.