MsExchange Blog Spot Telnet25

November 14, 2011

The Microsoft Exchange Replication service failed to start the TCP listener Event ID:2121

Filed under: General — telnet25 @ 3:26 pm

If you are getting fallowing errors Event ID:2121 , Source: MSExchangeRepl and your Exchange services are not coming up with fallowing errors…

Log Name: Application

Source: MSExchangeRepl

Date: 11/13/2011 5:50:17 PM

Event ID: 2121

Task Category: Service

Level: Error

Keywords: Classic

User: N/A



The Microsoft Exchange Replication service failed to start the TCP listener. Error: Microsoft.Exchange.Data.Directory.NoSuitableServerFoundException: The Microsoft Exchange Active Directory Topology service on server localhost did not return any suitable domain controllers.

at Microsoft.Exchange.Data.Directory.DSAccessTopologyProvider.GetConfigDCInfo(Boolean throwOnFailure)

at Microsoft.Exchange.Data.Directory.TopologyProvider.PopulateConfigNamingContexts()

at Microsoft.Exchange.Data.Directory.ADSession.GetConfigurationNamingContext()

at Microsoft.Exchange.Data.Directory.Recipient.ADRecipientSession.GetWellKnownExchangeGroupSid(Guid wkguid)

at Microsoft.Exchange.Data.Directory.Recipient.ADRecipientSession.GetExchangeServersUsgSid()

at Microsoft.Exchange.Cluster.Replay.RemoteDataProvider.StartListening()

Event Xml:


Possible solution: If topology service is not able to figured out what subnet the Exchange server belong too. Simple way to check and fix this will be adding the subnet for the Mailbox server into ADSITE and services. Perform IPconfig /all on the Exchange server figure out what subnet it is sitting on and add the subnet in ADSITE and services, you will need to reboot or , restart net logon and Exchange Services.


Oz Casey, Dedeal ( MVP north America)
MCSE 2003, M+, S+, MCDST
Security+, Project +, Server + (Blog) (Blog)


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