I am moving a client thatis using a different email server onto exchange soon. They currently have an application that updates several .csv files that the existing serverlooks to for group memberships. I am looking for a way to use these .csv files or some external database, other than having to enter the users in AD, to maintain these lists for them.I have been looking into dynamic distribution groups, but do not yet see a way to have them query an external source.I would appreciate all ideas!Thanks.Jeff

Hi Jeff, Based on my understanding, Exchange Server is not able to use external Database or CSV files. Nevertheless, I think that you can import the CSV files into AD by referring to following article: http://support.microsoft.com/kb/327620/en-us Mike

Hello Mike,Thanks for the suggestion!I'll be working on my test environment this week to look into it. Do you know if this process will allow for updates? These lists change and I will need to run an update process occasionally.Thanks again for your help.Jeff