Do the exchange enterprise cals are required for the UM role to work? MCITP Enterprise Messaging Administrator, MCITP Enterprise Administrator, MCSE, MCDBA

Yes, that's correct.Lanwench ** Do not fold, spindle or mutilate. Fill in the box completely and erase any stray marks. Use only a #2 pencil.

Strictly speaking it will work and allow UM enabled mailboxes without Enterprise CALs, you just need to to buy them to be properly licensed. SteveSteve Goodman Check out my Blog for more Exchange info or find me on Twitter

Yes, you only have to buy it and keep with you. There is no room to keep in server itself.Anil