2 different Exchange Servers responsible for different users under single Name Space !?

[netwalker1]

Dear All :

My company has a Domain ABC.com and a sister company XYZ.com has its own Exchange Server too ...
Now both of the companies have been migrated to a single Holding company NEW.com

We need to keep the users in ABC.com as the same as they were managed by my company - and the users in XYZ.com should also be managed by the sister company ...

The emails should be received by My company and sent to the users directly if they were from ABC.com - and if the users were from XYZ.com the exchange at my company should pass the emails to XYZ.com exchange !

How can we configure this ?

Mohamed Farid
[green]Know Me No Pain , No Me Know Pain !!![/green]

 

[ShackDaddy]

One of the Exchange servers/locations should be set as the place where all mail for the domain is delivered. That means your MX record would point to the IP at that site, or if you are using hosted mail hygiene, that service would deliver the mail to this particular site. You would configure the recpient policy for the domain so that that server is NOT authoritative for the domain. That allows it to forward out to the other server any email address in the domain that does not resolve to a local mailbox. You would set up separate connector to send mail to your address space and configure the ip/smarthost field with the remote server's IP/name.

On the other server you'd configure it not to be authoritative for that domain as well, and you'd pretty much configure the same sort of setting: a unique connector for your domain name that routes back to the other server. This server could route outbound mail directly to the internet, or it could route it back to the first server, which would be configured to handle all outbound delivery. Either way would be fine, but if you have a special outbound-filtering/smarthost service you are paying for, you may want to have it all go out from the same site.

Dave Shackelford
ThirdTier.net
TrainSignal.com