LCS/OCS Tablet Messages are Appearing in the Recovery Queue

Article:TECH89266  |  Created: 2008-01-02  |  Updated: 2012-02-28  |  Article URL http://www.symantec.com/docs/TECH89266
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Article Type
Technical Solution

Product(s)

Issue




After using the KB: IMLogService Reports Error in Windows Application Event Log: A Message Retrieved From The Queue Exceeded The Set Maximum, LCS/OCS messages still appear in the Recovery Queue.

  • For each message in the recovery queue there is a corresponding error message in the Application Event log similar to:

    A message retrieved from the queue exceeded the set maximum message size. Confirm that the correct message queue is being used. If so, use the IMLog Enterprise MMC snap-in to increase the maximum message size.
     


Conditions
 

  • IM Manager is deployed against Live Communications Server (LCS) or Office Communications Server (OCS).
  • Examination of the messages show the content of the messages starting with "base64:".



 


Cause



Whiteboard or handwritten messages are encoded by LCS/OCS clients with a "base64:" message and are unusually large compared to normal messages. These messages are larger than the maximum message size defined by IM Manager.


Solution



Upgrade to IM Manager version 8.4.10 or later. This version of IM Manager increases the maximum message size of 200000 bytes per message.

Workaround

If the organization does not desire compliance then this issue can be ignored. The messages are not to the IM Manager database because they end up in the recovery queue.

If the organization does desire compliance it is recommended to block these messages. These messages are not reviewable in the IM Manager reviewer console.

To block the messages, add the following phrase to your IM Manager Content Filtering List:
 

      base64:


To do this follow these steps:
 

    1. Open the IM Manager Administration Console.
    2. Click on the Policies tab.
    3. Click on the Group Policy > All Rules menu item.
    4. Click on the blue edit button for the General Content Filtering Phrase List.
    5. In the text field enter: base64:
    6. In the drop-down selection, choose "Starts with".
    7. Press Add.
    8. Press Submit.
    9. Click on the blue edit button for the Content Filtering Action: General.
    10. Ensure that the "Enable Content Filtering" check box is marked.
    11. Select the Radio Button for "Block the Message".
    12. Press Submit.




References
How to Extract IM Manager Messages from an MSMQ

http://service1.symantec.com/support/ent-gate.nsf/docid/2007556753337498

How to Write IM Manager Messages Into an IM Manager MSMQ
http://service1.symantec.com/support/ent-gate.nsf/docid/2007402792006798

IMLogService Reports Error in Windows Application Event Log: A Message Retrieved From The Queue Exceeded The Set Maximum
http://service1.symantec.com/support/ent-gate.nsf/docid/2007525548279398

How to Troubleshoot Messages in the IM Manager Recovery Queue
http://service1.symantec.com/support/ent-gate.nsf/docid/2007110915301954


Technical Information
As of IM Manager version 8.4.10 the queue has a maximum message size of 200000 bytes per message. Prior to IM Manager version 8.4.10 the queue has a maximum message size of 100000 bytes per message.


 


Supplemental Materials

SourceETrack
Value1496779
Description

The base64 message is logged with random characters when LCS is used with tablet PC


Legacy ID



2008040209481754


Article URL http://www.symantec.com/docs/TECH89266


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