Removing all traces of a domain (Full Version)

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cflock -> Removing all traces of a domain (18.Jun.2014 3:38:42 PM)

If this isn't the right section for this question, please let me know.

So my situation is this: I've got several (4) domains set up in an attempt at a multi-tenant exchange system.
We followed instructions online when we set this machine up, that were supposed to separate the address lists so that users would be unaware that the server was 'shared'.
'Splitting' address lists and all sorts of trouble.

We've had a lot of problems and been very unhappy with this set up, and recently decided the simplest solution was to move one of these domains (lets call it off, onto its own exchange server.
We may split the remaining domains up down the road, but not right away.

So that process was done and went smoothly; the new server is in a completely different domain. We made a 'clean break'.

Now back on the 'old' exchange 2010 machine, what I want to do is to remove all the users, and every last trace that references this domain.
I want to make sure that if someone in '' sends an email to, this exchange server does an mx lookup on and the email goes out through my spamfilter.

Also, I've had some issues with the address lists on this old server, so I want to make sure I do this right so that people on the old server trying to send emails to don't get an error because the user has been 'removed' from the address list.
(This problem has been an issue in the past. After 'splitting' the address lists when we set this up, we would often get this popping up when composing an email in outlook, even though the email would actually go through.)

Thanks for any help!


cflock -> RE: Removing all traces of a domain (20.Jun.2014 9:58:18 AM)

I've done some searching for this online, and I don't know if I'm using the wrong search terms or what, but I'm not finding much info on it. I can't believe that, with people running multi-tenant exchange systems, this issue hasn't come up plenty of times.

Any sort of hints would be appreciated!



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