I have been running an Exchange 07 server for a few months now. In the last few days, I have had repeated calls from the customer about Outlook 2003 responding with an error that the server was unavailable. I tried a bunch of things, including repairing Outlook, creating a new profile, creating new accounts, and finally found that using ipconfig /flushdns clears the issue... temporarily it seems. The one user having the issue has grown to 10 or so. I have restarted a few of the services on the Exchange server as well.
On a side note, the first user, when I recreated her account, gets new mail, has old mail but only up until sept of this year and then it is completely empty until the day I recreated it.
Anyone have any suggestions on either?