The only way to do this is to hide the membership in ADUC using ADUC from
where Exchange is installed Rightclick the group, select exchange tasks,
then select to hide membership.

Signature
Ward Flowers (MSFT)
Microsoft Exchange Support Engineer
This posting is provided "AS IS" with no warranties, and confers no rights.
>I have the following secnario:
>
[quoted text clipped - 10 lines]
> Is there is any method to prevent the group expansion (disbale the + sign
> next to the group name)??
Feras Mustafa - 26 Jul 2006 12:54 GMT
Hi Ward, I followed what you suggested, but this also hides the group
membership in Active Directory users and computers. and It became very
deficult to administer!!
Is there is any other way then "Exchnage Tasks>> Hide Membership"?? to
prevent users from expaneing a group in outlook??
> The only way to do this is to hide the membership in ADUC using ADUC from
> where Exchange is installed Rightclick the group, select exchange tasks,
[quoted text clipped - 14 lines]
> > Is there is any method to prevent the group expansion (disbale the + sign
> > next to the group name)??