This problem can occur because when the routing engine starts, the routing engine passes all the address space types that are configured to the information store. When an address type of MSA (defined for AppleTalk Connector) is passed with a blank address space, the information store runs erroneous code.
To resolve this problem, obtain the latest service pack for Microsoft Exchange 2000 Server. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
301378 XGEN: How to Obtain the Latest Exchange 2000 Server Service Pack
The English version of this fix should have the following file attributes or later:
Component: information store
To work around this problem, change the address for address type MSA from blank to an asterisk (*).
Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server. This problem was first corrected in Microsoft Exchange 2000 Server Service Pack 1.