Preventing Out of Office Messages from being sent ou to distribution lists

Valid for Exchange 2003 only.

Key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\ParametersSystem

Value: SuppressOOFsToDistributionLists (DWORD)

Set 1 to suppress or 0 to allow.


The setting should be set on mailbox servers.


The setting prevents sending OOFs unless the the recipient is in the TO,CC or BCC(if no one other recipients
appear in the other fields).


Displaying the Security property page

An oldie but still worthwhile mentioning.
The Exchange System Manager does not display the Security property page for the organization or for the Administrative Groups.

To display the page add the following registry entry:

Key: HKCU>Software>Microsoft>Exchange>ExAdmin
Value: ShowSecurityPage (DWORD)
Set the value to 1 and restart the ESM-Presto!