Dynamic distribution group not updating
However, for small groups you need to have a value to filter on, such as city, office, etc, and may need to add additional attributes to user's account in order for a dynamic group to work.To create a dynamic group: When a user opens a dyanmic distrubation group, they'll see a simple contact: In the Address Book, the Dynamic Distribution Group is marked with a gear icon over the group icon.
(You can create mail contacts in Exchange pointing to the online groups.
The problem is that distribution lists and security groups are often manually maintained by the Exchange or Active Directory administrator.
Group ID active directory tools put an end to this chain of manual processes by automating the creation and management of these groups.
However, if you list the properties of the group in the Exchange Management Shell (EMS) you will not find the members as they are determined at the run time by the custom filter used when the group was created.
Active Directory Groups are as dynamic as their members: they need to change as users switch responsibilities, roles and locations.