RecipientDSInteg - The user is mailbox enabled and contains no home-mta (homeMta)

Hi there,

I am at the final stages of completing my Exchange 5.5 to Exchange 2003 migration/co-existence.  

Upon performing the post installation tasks and running the RecipientDSInteg tool, I get a message for a lot of accounts that says:

DN = CN<username>,CN=Users,DC=afma,DC=gov,DC=au
   object-class = top$person$organisationalperson$user
   The user is mailbox enabled and contains no home-mta (homeMta)

This occurs for just about all of our 180 users, not not totally.

I am wondering what this message means?  This is our second attempt at installing Exchange 2003 in this environment and although we successfully removed most of the last install I have a feeling that these are bits leftover in AD from our previous install.

I have not yet taken the step to move the users mailboxes however I just wanted to know whether this message is a problem and if so how to get rid of it.  If it is not a problem and will be sorted following the mailbox move of these users then I am not too worried.

Thanks!

Pete