I have an Exchange Server 2003 as part of our SBS 2003 server.
Sometimes users get a "500 internal server error" when trying to access their mailboxes through OWA. However most users doesn't have any problem using OWA and if a user get a 500 error and then tries a while later they get in. Is there a limit to the number of users logged on to OWA in SBS? Or is there some other problem?
Here are two links that can help: