Distribution List Manager
Distribution List Manager is the civilized method of managing distribution lists for Microsoft Exchange.
Quite simply, it allows administrators to create a distribution list once and never worry about updating that distribution list again. Distribution List Manager is the the most efficient and cost effective tool on the market today to reduce the work of e-mail administrators. Better yet, since your distribution lists are always up-to-date, Distribution List Manager improves the accuracy and functionality of your e-mail system and your company because the people that are supposed to receive an important e-mail are always on the list.
NCGroup/CompuCom