Exchange still accepts mail from old domains

I have inherited the wonderful job of administering an Exchange server with 1100 mailboxes.

In the past this server managed mail from 3 domains, but now things have changed so we now have only 1 domain left !

Ex.:
under recipient policy -> default policy -> properties i have removed all unwanted domains.

But my users still get mails from the old domains. And if i look in the ad i can see that users still have their old email under the tab e-mail address. If i remove this old email manually on the user, it bounces. But i can´t manually delete for 1100 users...

What have i done wrong, or have i missed something?
kennethknudsen74Asked:
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InteraXCommented:
Hello kennethknudsen74,

Exchange will not automatically remove old email addresses. This can only be done manually from what I remember of the MS courses.

Regards,

InteraX
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kennethknudsen74Author Commented:
Oh man, if thats right I am in for a really big job ...

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InteraXCommented:
kennethknudsen74,

The recipient polices can be used to add new email addresses, but not remove an old email address. This si a safety precaution. You can use the policy to change the default email address to a different domain.

This has been done as a safety precaution. Imagine, user1 moves from dept A to dept B. Their email address will need to change, but they still need to be able to recieve emails to the old address as they still exist. This is the case in the majority of scenarios.

InteraX
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vishal_impactCommented:
In a nut shell, yes.
Make sure your new domain name registrar has its MX record pointing to your current exchange box, make the changes above and thats it.

Your Outlook clients wont notice a thing.  One point to remember though - your current logins will still be the same e.g. domain1.org and wont change.  So if you have OWA set to full email address then they will have to type in username@domain1.org not username@domain2.org - you haven't changed AD just exchange.
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kennethknudsen74Author Commented:
Is there a way through ad to remove these old email adresses?
 or am I looking at going through 1100 users in my ad manually?
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InteraXCommented:
kennethknudsen74,

From the look of it, ADModify could do the job.
http://www.codeplex.com/admodify

InteraX
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kennethknudsen74Author Commented:
Great app. I will dream of it, it´s so easy...

thx
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kennethknudsen74Author Commented:
I  can highly recommend this ADmodify - it solved my problem in about 5 minutes....

thx to verybody
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InteraXCommented:
for that I only get a 'B' ;-)
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