XADM: Limiting the Number of Recipients of a Message

 Last reviewed: March 11, 1998
Article ID: Q126497
The Information in this article applies to:
  • Microsoft Exchange Server, version 4.0

SUMMARY

A new registry value has been added to the Microsoft Exchange Information Store service that allows the administrator to set a limit on the number of recipients that a mail message can have.

MORE INFORMATION

The customer must have Microsoft Exchange Service Pack 1 or above, which replaces Store.exe and Emsmdb(32).dll. To set this parameter:

  1. Start Regedt32.exe
2. Go to KEY: 
   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\
            ParametersSystem
3. From the Edit menu choose Add Value and set it to: 
     Value Name: Max Recipients on Submit
     Data Type: REG_DWORD
     String: [A value equal to the max. recipients you wish to allow]
If a user attempts to send a message to more recipients than is designated by the Max Recipients on Submit parameter and the user has the new Emsmdb(32).dll, the following error message will be displayed when they attempt to send the message: 

   The item could not be sent. The number of recipients on this message
   exceeds the upper limit configured by the administrator.
If a user attempts to send a message to more recipients than is designated by the Max Recipients on Submit parameter and the user DOES NOT have the new Emsmdb(32).dll, the following error message will be displayed when they attempt to send the message: 

   The item could not be sent. The client operation failed.
Note the following when implementing this: 1. It is not necessary to stop and restart services for this change to take 
   effect.
2. The number chosen applies to total recipients associated with a message 
   ( To:+Cc:+Bcc:=total).
3. The limit cannot be circumvented by use of a personal distribution list, 
   it is evaluated for number of entries before the send.
4. Server-based distribution lists will allow you to exceed the total 
   number, with proper permissions, of course.

STATUS

This problem been fixed and is now available in Microsoft Exchange Service Pack 1.

Additional query words: Exchange Registry maximum xcln header
Keywords : kbbug4.00 XADM kbusage
Version : 4.0 5.0
Platform : WINDOWS
Issue type : kberrmsg

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Last reviewed: March 11, 1998
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