I would like to ask about one of big headaches with Exchange/Active Directory 2003 and how it is handled in Exchange 2007. The "Disable user account/master account SID" situation.
We have a split permission model where most user management is dispersed through the organisation at the local IT level. The Exchange management is only handled by a single central group.
Accounts are disabled by the local IT areas for one reason or another, and then reenabled in some case the next day. When the account is disabled by the local IT the mailbox stops working and whenever an email is sent to the mailbox our logs fill with error 9548 "Disabled user /O=BLAH/OU=BLAH/CN=RECIPIENTS/CN=SMITHB does not have a master account SID".
We have a tool call NOMAS.exe that "fixes" these problems but I wish we could just go back to the 5.5 model of the mailbox continuing to function even if the account is disabled. Or at least an option to choose which way we would be affected [mail stops when account disabled v's mail continues even if account disabled]!
How is this recipient task performed in Exchange Server 2007?