I cannot send from a hidden distribution list, once I do this, I get "You do not have permission to send to this recipient ," Now I encountered this before. But I don't think i've ever encountered a fix, mr google(bing) doesn't help either Unhiding is not option. It works when it is unhided though

Sadly, this is by design: "Also, before you perform this procedure, be aware that you cannot send e-mail messages on behalf of a mailbox if the mailbox is hidden from address lists." -http://technet.microsoft.com/en-us/library/aa998291(EXCHG.80).aspx Mike Crowley Check out My Blog!

Cheers!