The MailDisableGroup method mail-disables a group. The method
also performs the following tasks related to address lists:
Finds the responsible organization by looking at the contact's
otherWellKnownGuids attribute. The method then looks at the
organization's otherWellKnownGuids attribute to find the GAL for
the organization and removes the organization's GAL from the
showInAddressBook attribute of the group.
Finds the AL for the organization in the manner stated above
and then removes the organization's AL from the showInAddressBook
attribute of the group.
Removes the organization from the otherWellKnownObjects
attribute of the contact.