Hoping someone can help me with this.
What I have: Exchange Server 2003 SP2 standard running on Windows Server 2003 Standard. I have about 75 users using either Outlook 2003 and Outlook 2007 on a LAN or using RPC over HTTPS. I have OWA users and I have Blackberry users with Blackberry Enterprise Server and Mac users using the "Mail" program with IMAP.
The issue: Suddenly today all Outlook 2003/2007 and Blackberry clients stopped working and upon lauching Outlook receive an error message "Cannot open your default e-mail folders. Microsoft Exhcnage is not avaialble..." There have been no changes to the server recently and before today eveything was working without issue.
Details: Outlook 2003/2007 on the LAN and RPC over HTTPS does not work. Blackberries do not work. Outlook Web Access does work. Mac clients using IMAP works. I can ping and otherwise access the Exchange Server without issue. There are no errors in the Application or System logs. I tried running Outlook on multiple machines and I tried recreating profiles. All in all the server itself seems to be working. Email is flowing in and out, but Outlook and Blackberries have no access.
Any ideas anyone?