Event Type: Error Event Source: ESE Event Category: Transaction Manager Event ID: 623 Description: Information Store (ID) xxxx: The version store for this instance (0) has reached its maximum size of xxxMb. It is likely that a long-running transaction is preventing cleanup of the version store and causing it to build up in size. Updates will be rejected until the long-running transaction has been completely committed or rolled back. Possible long-running transaction: SessionId: xxxx Session-context: xxxx Session-context ThreadId: xxxx
Event Type: Error Event Source: MSExchangeIS Mailbox Store Event Category: Logons Event ID: 1022 Description: Logon Failure on database "xxxx" - Windows 2000 account xxxx; mailbox xxxx. Error: -1069
As a result, client access and message delivery are suspended for the affected Exchange Server 2007 SP1 server. Therefore, you have to restart the Microsoft Exchange Information Store service to resolve the problem.