Maintaining user group lists is a pain. Often users cobble together their own utilities to help the process, but maintaining those things is a pain, too.
Imanami has a nice set of tools that reduce the burden on Exchange admins:
- DTM provides synchronization with various repositories. Eg Active Directory, Peoplesoft, SunOne/iPlanet, Oracle, SAP, DB2, LDAP, CSV files, SQL, Excel, Access
- SmartDL automates the creation and maintenance of Exchange and Active Directory distribution lists and security groups
- WebDir lets users update their own directory information
... David Ferris