Currently have an issue with users having the ability to send as if they were someone else.

Now this happens to be on SBS 2003 and SBS 2003 R2

I have gone into AD, enabled show advanced features, gone onto the security tab of the user who wants to give the other user the ability to send as them, add the user and then tick the sending as box, applied it and then updated the domain policy in exchange, rebooted the users pc, gone into outlook, tried sending an email as the other person and it comes back with you do not have permission to send to this recipient.

Anyone got any ideas as this is two different servers with the same problem..

The users also have permission to their mailboxes which works fine as they have them added.

Andy