I am trying to send an email from an email address (distribution list) that is "Hidden from Exchange Address lists" (via the Exchange Advanced checkbox). I want to do so as I do not want the distribution list in our GAL but I do need to send from it. To date, I have simply gone in and unchecked the "Hide from Exchange Address Lists" whenever I want to send from the address, but as you can imagine this is a pain. Everytime I try to send from this address when the email address is hidden, I get a message saying "You do not have permission to send on behalf of the specified user". Yes, I do have Full Control permissions for the Distribution List/email address. Can anyone help? I don't care how I do it but I act for two organizations and need to have an email address in each.