Kudos to this solution, but guys, how can I set that setting for all the distribution lists? for the new ones and for the old ones?? i have 325 different distribution liststhanksJC

I think you meant to reply to another post instead of creating a new one?MVP | MCSE:M | MCITP: Enterprise Messaging Administrator | MCTS: OCS + Voice Specialization | http://www.shudnow.net

Yea, need to know what setting, but I am guessing that:get-distributionGroup | set-distributiongroup -attribute "setting" will help.I am willing to guess this is the "allow non-authenticated users to email to this group" If it isn't that, the solution would look similar to below, but using a different attribute.If so:get-distributiongroup | set-distributiongroup -RequireSenderAuthenticationEnabled:$falseWould set ALL groups to allow Internet email.Chris