Migration of Users to Different Exchange 2003 Server in Different Domain

I am looking to move all (10) accounts off of a 2003 Exchange Server on domain abc.com to a different 2003 Exchage server on domain def.com.  I have copied the user mailboxes to the different Exchange Server on def.com.  Domains abc.com and def.com are completely independent.   I have the following questions:

(1) What has to be changed so that emails addressed to johndoe@abc.com come to the different Exchange server in domain def.com?
(2) How can I allow these 10 users to keep their email addresses (for example johndoe@abc.com) and have any email send to johndoe@abc.com come directly to their new mailbox on the different Exchange Server on domain def.com?
(3) How can I set it up so that emails coming from johndoe on the different Exchange server in domain def.com still appear to be coming from johndoe@abc.com?

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1) the mx records of the abc.com domain needs to be pointed to the new exchange server setup
2) the recipient policy on the new server needs to be configured to accept mail for abc.com and def.com domain
3) the abc.com smtp domain in the recipient policy needs to be setup as the primary policy

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1) and 2) as the 2 exchange servers are on independant domains i would just leave create mailboxes back on abc.com and forward the mail onto def.com

3) as rakeshmigtani says just setup there abc.com smtp as a primary
zabacAuthor Commented:
Additional Question s:
 (1) Should I setup a seperate receipt policy for abc.com on the different Exchange server in domain def.com?  
(2) To accept mail from abc.com do I just need to add an smtp address for abc.com domain in this new receipt policy and make it a higher priority than the default (other) receipt policy?
(3)  Does SMTP need to be running on the Exchange server on def.com?  If so how can I tell if SMTP is running and if SMTP is not running how do I configure it to run SMTP?
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zabacAuthor Commented:
The domain abc.com is going away.
1) create one policy for now and put abc.com and def.com in it
2)set abc.com as primary
3) also when you add the smtp domain name in the recipient policy, the small check box " this exchange server accepts email for this domain" needs to be checked for abc.com and def.com
4) the smtp service needs to be running on the new server do that the users can send/receive emails
5) smtp service can be seen in the list of services. you would also be able to expand the default smtp virtual server in the exchange system manager if the service is running

any updates?
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