SBS 2008 multiple email configurations with smart host

Hello everyone...I have what I hope is an easy questions for an SBS2008 guru.

I have an SBS server that currently is set up with a new domain name.  Lets call it domain2.org.  domain2.org is managed by the SBS server to allow them access to remote.domain2.org.  The exchange mailboxes are setup to be username@domain2.org.
Heres the rub... I dont want to change the autodns management, which is why I created domain2.org.  However, the company already has their primary domain, domain1.org and a host that hosts the POP email and accounts.
I want to setup exchange to accept domain1.org.  Configure a POP connector to get the mail from the ISP, and a smart host to send the mail from domain1.org to the ISP.  
I essentially want domain2.org to work for remote.domain2.org and domain1.org to be the primary send as address.  I will also have to manually setup the email addresses for domain2.org since they were setup by the ISP and not to a specific standard.

I hope this isnt too much info and someone can help me.  Thanks
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pattersonrAsked:
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