Exchange seems to have been migrated from Exchange 5.5 to 2003 by someone else, under all the security tabs on the Exchange server is a "Account Unknown(S-1-5-21-1844237615-1078145449-1060284298-1148)" which is inherent thus REMOVE doesn't work. I have also looked through the GPO to see if I can find the user in question but haven't had any luck find it. I tried to click Advanced and remove the inherent option, then clicked copy, but when I clicked applied after removing the above account I was told that 27 rights would be changed; so I aborted it. I am open to suggestions how I can remove this user without screwing up the rest of the rights on Exchange. Thanks! Regards, Andrew