Group database entries not deleting automatically

Hi i have one seperate address book for groups i have alot of groups in that database with the entries. access is given to limited people only to send mails to those groups. the problem is when i delete any user from the main address book the user is not removed automatically by adminp from this separate address book groups. i have to manually go and remove the user from that group. any solution any body has?

Subject: Group database entries not deleting automatically.

Make sure you have set an Administration Server in the ACL of your separate address book and make sure the Action is set to “Modify all Names fields.”