Article ID: 294298
Article Last Modified on 2/27/2007
APPLIES TO
- Microsoft Mobile Information Server 2002 Enterprise Edition
- Microsoft Mobile Information Server 2001 Enterprise Edition
This article was previously published under Q294298
SYMPTOMS
When you use Microsoft Mobile Information Server to access an Exchange Server 5.5 mailbox, a timeout error message may appear on the device (the exact error message depends on the device) and the user may not be able to access the mailbox. The following event ID message may be logged in the Application event log:
Event Type: Error
Event Source: MMIS55Mailbox
Event Category: General
Event ID: 88
Date: 3/20/2001
Time: 11:20:49 AM
User: N/A
Computer: MISSERVER
Description:
Login synchronization for user % timed out. Check system configuration and performance.
Data:
0000: 45 76 65 6e 74 20 53 6f Event So
0008: 75 72 63 65 3a 20 43 41 urce: CA
0010: 75 74 6f 4d 75 74 65 78 utoMutex
NOTE: The "user %" portion of this event ID message is the user name of the user that is denied access.
CAUSE
This problem can occur if remote procedure call (RPC) connectivity between the Mobile Information Server and the Exchange Server computer is not available. This problem can occur due to a firewall that does not enable all RPC ports to pass thru.
For additional information about the ports used by Mobile Information Server, click the article number below to view the article in the Microsoft Knowledge Base:
294297 TCP/IP Ports Used by Microsoft Mobile Information Server
WORKAROUND
To work around this problem, if a firewall is present, verify that the correct ports are open as per the article referenced in the "Cause" section of this article. For Exchange Server 5.5 computer access, the following ports must be available:
Standard ports that you must have to access Mobile Information Server:
- 3269 - Global Catalog with Lightweight Directory Access Protocol (LDAP)
- 80 - Hypertext Transfer Protocol (HTTP)
- 53 - Domain name system (DNS)
- 389 - Lightweight Directory Access Protocol (LDAP)
- 36, 37 - Remote Procedure Call (RPC)
- 1026 - MSRPC
- 88 - Kerberos (if you use integrated Windows authentication)
Ports that you must have to access Exchange Server 5.5:
- 1024 and higher - Dynamic RPC
- 50, 51, UDP 500 - IPSec (Exchange Server 5.5 on Microsoft Windows 2000)
To avoid the need for all ports higher 1024 for Dynamic RPC, Exchange Server 5.5 RPC ports can be statically set.
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
Additional query words: exch2kpw event id 88
Keywords: kbbug KB294298
