Today, a customer called me with an issue that Exchange server is stooped and event viewer had a lot of events that IMAP, POP3, Active Directory Topology services… and so on.
The issue was that the domain controller was not assigned to an active directory site.
just go to active directory sites and services and configure the correct subnets and site.
list of the events:
1003: POP3 server can’t find configuration
1016: The worker process crashes continuously on startup: C:\Program Files\Microsoft\Exchange Server\ ClientAccess\PopImap\Microsoft.Exchange.Pop3.exe. The Service Will be Stopped.
1003: IMAP4 server can’t find configuration. The Exchange Topology service did not return a suitable domain controller.
1016: The worker process crashes continuously on startup: C:\Program Files\Microsoft\Exchange Server\ ClientAccess\PopImap\Microsoft.Exchange.Imap4.exe. The Service Will be Stopped.
1121: Error 0xfaf connecting to the Microsoft Active Directory.
5000: Unable to initialize the Microsoft Exchange Information Store Service. Error 0xfaf
1005: Unexpected error No site name is available for this machine. Facility: win32 ID no: c007077f Microsoft Exchange System Attendant occurred.