MSExchangeAL event 8231 indicates that problems were encountered when implementing Recipient Policies in an Exchange 2000 environment. The related events (2027, 2037, 8247, etc.) in the application log will indicate the underlying cause of the problems.
- This issue can occur because of an invalid or third-party e-mail address generator. When the System Attendant starts, it attempts to load an address generation dynamic-link library (DLL) file for each address type that the Recipient Update Service (RUS) is responsible for stamping. If the System Attendant is unable to load the DLL for any address type, the RUS fails to stamp any e-mail addresses and logs an 8231 event in the application log.
- In a scenario where the mailboxes are on an Exchange 2000 Server in one domain (for example, DOMAINA) and the user accounts are home in another domain (for example, DOMAINB), this issue can occur if DNS name resolution between the Exchange 2000 server that is running the RUS and the target domain controller in the remote domain (DOMAINB) is malfunctioning; or if the NetBIOS Name for the domain controller in the remote domain is not resolvable by Exchange 2000 Server.
- In an environment where there are multiple domain controllers, ensure that the domain controllers/global catalogs are synchronized before attempting to rebuild the RUS.