Proper Removal of secondary email domain from exchange and outlook

we have an exchange 2003 environment with few domains used as aliases by different users. abc.com is the main domain. Recently, one of the aliased domain (xyz.com) was permanently moved to a different email server. Users from xyz.com domain is unable to receive emails from the local users (abc.com). Using the message tracking in exchange, i can see that emails sent to xyz.com users still goes to their local mailbox.

The following has been performed.
- removed the domain (xyz.com) from the recipient policies.
- manually removed xyz.com address from the users and set a new primary address.
- ran rebuild Default OAL and downloaded new address book from outlook
- hide from exchange address list

Using OWA from an outside system, it works fine but using outlook inside, it doesnt work. i already deleted auto complete and typed the address manually but for some reason it still resolves it to the local address (abc.com) and all emails to xyz.com goes to abc.com domain.

Note:
I dont see the name/user in GAL from outlook.

Thanks for the help!
pordsAsked:
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Miguel Angel Perez MuñozCommented:
Maybe Oultook has cached this contact. To remove: http://www.wikihow.com/Clear-the-Outlook-Autocomplete-Cache
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pordsAuthor Commented:
Miguel - Thanks for the response. I am hesitant to wipe the auto complete cache completely just for 1 email address. I already deleted the entry in the auto complete list and typed the email address manually but it will only revert to its primary address @abc.com despite type @xyz.com.
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Miguel Angel Perez MuñozCommented:
Sorry, I re-read your question (this flu is killing me), did you rebuild RUS when you delete from recipient policy domain xyz?
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pordsAuthor Commented:
yes. i also ran rebuild RUS. I did Update Now too.
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pordsAuthor Commented:
Outlook is also in non-cache mode and still inhibits the same behavior as in cached moded.
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Miguel Angel Perez MuñozCommented:
This happens only to existing accounts or new created too?
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pordsAuthor Commented:
Existing accounts. These accounts are no longer with the organization but will still need access to some resources while in transition.
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pordsAuthor Commented:
Ok. i had to do what I originally didnt want to do.

To fix the issue:
I removed all exchange features from the accounts and re-run RUS, OAL and removed auto complete entries on local users that will be sending them emails.
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pordsAuthor Commented:
Only one was responding and i eventually fix the issue myself.
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