Downgrading to Single NIC with two SMTP Connectors

I am trying to downgrade an SBS 2003 server to one single NIC card in order to start migration to SBS2008.  

I have two SMTP connectors in change.  One was assiged to the 'internal' card on 192.168.100.2 and the other assigned to external 192.168.100.3.  There were two SMTP connectors in Exchange, one said Internal and was running on the internal card and one was External and running off of the external card.

I disconnected the cable from external and then disabled it and ran CEICW, rebooted, and it didn't reconfigure SMTP to only use the one remaining 'internal' card as I had hoped.

Does anyone have any ideas for me?
shoshe933Asked:
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Jian An LimConnect With a Mentor Solutions ArchitectCommented:
it depends on what is your 2 nic setup.

usually external ip address will be in different subnet but your case internal and external is in the same subnet.

in a normal sbs environment, there will be only 1 smtp connector that listen to all ip address.


so your setup is not sbs only but some one have changed the default behavior.


so what you want to know?


you can have 2 IP address on the same internal card though, do this fix your problem?

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Cris HannaConnect With a Mentor Commented:
Domain controllers do not like mutihomed configurations and SBS is only supported with an Internal NIC on a private class C address and an external nic on either a different private class C or with a public IP

But for your migration, you are correct, you must only have a single nic.
Is your "external mail connector" going to another mail server to actually send the mail?  Known as a smart host?

Who originally set this up?
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