[ExchangeList] Re: Can not remove user

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

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