Multiple domains one exchange 2003 one mailbox one user account send for all domains

I have a situation where I need to have one exchange server sending and recieving for multiple domains. There are several users that need to function on each of these domains. I need to keep each user to only one mailbox and one user account that can recieve for all of the doamins. (this is easy) I am trying to get outlook to have multple accounts so that each user can open a new email and select the account that they want to use for the outbound email and then send the email out through the exchange server without doing send as. Outlook versions range from 2003 to 2007. I have setup the exchange for the domain names, each user has the required email addresses for each domain, I have setup multiple accounts in outlook allowing only sending for the non default domain names, I have not been able to send emails from any account in outlook other that the default exchange account. I am getting this from outlook when sending an email from the second account in outlook; Sending reported error (0x800CCCOF) : 'The connection to the server was interrupted. If the problem continues, contact your server administrator or Internet service provider (ISP).'
JustLogicalAsked:
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Glen KnightCommented:
If all the email addresses for the different domains are part of the same mailbox then you will need a 3rd party tool like: http://www.ivasoft.biz/smartreply2007.shtml

Alternatively configure seperate mailboxes for each email address then use the from field to specify the mailbox you want to send as.
JustLogicalAuthor Commented:
Resolved this without any 3rd party software. Did not need seperate mailboxes either.Each user has the three email addresses as part of their AD account, one mailbox. Outlook has 3 accounts, 1 exhcnage and 2 POP3. THe POP accounts send only through the exchange server. My issues was I needed ti install metabase tools and configure SMTPSVR. Have tested and each user has full functionality for each domain.

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JustLogicalAuthor Commented:
I fixxed it, I wrote the solution, I accepted it.
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