Setup a second email domain in Exchange 2003 (SBS2003)

Howdy,
We currently have a SBS2003 server that is running Exchange.  It is setup in such a way that it sends email as Domain1.com.  It receives email by downloading from a hosting account using a POP3 connector (I know, not ideal).
We are also now needing to setup domain2.com on this Exchange box.  We need it to be setup as a "real exchange server" where it sends and receives email through itself without the need for using a hosting account (aka no POP3 connector).
Does anyone know if this is possible, and the steps involved to get this going?
Thanks!
aiscomAsked:
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
The new server would then use SMTP and not POP3.
Secondly you would have to Install Exchange on a new box get a MX entry point it correctly and create a test mailbox and try Mail-Flow, OWA and other stuff.
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Have a look at these links as well
http://support.microsoft.com/kb/833396
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aiscomAuthor Commented:
Rancy: So I would need to put a second physical server there with Exchange 2003 on it for this to work?  If possible, we would like for this to all work off the SBS 2003 box.  Is this not possible?
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Yes its possible with the same server, you would have to get MX to point from ISP to your Exchange to receive mails from external (internet) and as SMTP is already working to send mails out and then using the MX record you can receive emails as well, for this just have a word with your ISP once. For this the user would have to create new Outlook profiles for Exchange Server.
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aiscomAuthor Commented:
Rancy: Thanks for the help.  Would you know where I could find the documentation on the settings I would need to make in Exchange itself?
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Rancy:

> you would have to Install Exchange on a new box
WHAT ARE YOU TALKING ABOUT?

You don't need a new box.  Just setup recipient policies and don't touch the POP3 connector.

Instructions are found here:
http://www.petri.co.il/configure_exchange_2000_2003_to_receive_email_for_other_domains.htm
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aiscomAuthor Commented:
leew:  Thanks for the link!

How would it work if a user needs to have Exchange accounts on both domains, and needs to be able to send from both (considering Outlook only allows 1 Exchange account)?  OWA or configure the second account to use IMAP maybe?
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Lee W, MVPTechnology and Business Process AdvisorCommented:
If you need a second MAILBOX that's a different story - I would suggest keeping the mailboxes separate and maybe using OWA for one.  

See also:
http://www.amset.info/exchange/twodomainsoneuser.asp
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Yeah we can get another server for the better and as i said earlier that it can work with SMTP and help the mail flow part.
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
If both the Accounts are in one domain we can give rights to one account on the other with Full Control as Mailbox Rights and add open Outlook for the one that we have given rights to and add the other through more settings.
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Lee W, MVPTechnology and Business Process AdvisorCommented:
WHY is getting another server an economical solution to something at can be done with a little configuration?  HOW will another server help the mail flow part if you just need a little configuration to handle another domain?
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