If your Windows server event log keeps showing the following error:
Event 929: Source: MSExchangeTransport; Failed in reading Connector’s DS Info Process Id: XXX Process location: XXX ConnectorDN: XXX
It means that you have a bad/ghost Exchange connector. This happens especially when an Exchange server dies without being properly demoted. In this case, Exchange System Manager (ESM) can’t be used to delete the dead server.
We can use ADSIEDIT.msc (Active Directory Service Interfaces Editor) to force the removal of this dead Exchange server.