Force Exchange 2007 to send from a specific IP

I have a single 2k8 R2 VPS with Exchange 2007.  The server has two public IPs assigned to it's NIC. One IP has an SSL cert and reverse DNS set up on it for the purpose of Exchange using it.  I thought things were going well until I discovered that it wasn't sending via that IP.

Is there a way I can configure Exchange to send using that IP?
David WilliamsonIT DirectorAsked:
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Set-SendConnector but looks like it is used only on Edge servers. But you may try.

Set-SendConnector <Connector name>  -SourceIPAddress <IP Address>

SourceIPAddress: This parameter specifies the local IP address to use as the endpoint for an SMTP connection to a remote messaging server. The default IP address is This value tells the server to use any available local IP address. This parameter is only valid for Send connectors that are configured on Edge Transport servers.

Otherwise try changing the Network binding order.
David WilliamsonIT DirectorAuthor Commented:
Thank you, I'll try that.  Do you think that setting this could disrupt my email functionality, and if so, how will I be able to undo it?  Is there a way I can see how the parameter is set before changing it?
David WilliamsonIT DirectorAuthor Commented:
I went ahead and set the parameter, but it appears to still be using the "other" public IP.  I'll try the binding order next.
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By default IP address is set to . You can also verify default setting by running

Get-Sendconnector <connector name> |fl

and verify what is set for SourceIPAddress.

To revert the settings you can run the same command

Set-SendConnector <connector name > -SourceIPAddress <Default value which you saw from the above command>

But above description clearly says "This parameter is only valid for Send connectors that are configured on Edge Transport servers."

So this is just a trial method on HUB if you dont have Edge.

Otherwise try changing the Binding

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David WilliamsonIT DirectorAuthor Commented:
In looking up the binding link, it appears that that only applies to the NIC, not the IP assigned to the NIC.  Any other ideas?
You said

I thought things were going well until I discovered that it wasn't sending via that IP.

Is the NIC card for which above statement is assigned on the TOP if yes. please move the other NIC on the top from which you would like to send e-mail from.
Sorry my above statement is not clear..

I am talking about binding order. Is the NIC for which IP is assigned is on the TOP . If yes, then bring the one you wanted on the TOP and and send e-mail..

You may want to flushdns / restart transport service after you do that
David WilliamsonIT DirectorAuthor Commented:
There is only one NIC and both IPs are assigned to it.
David WilliamsonIT DirectorAuthor Commented:
My configuration, being single server, is not eligible for setting the outgoing IP to be used.  If I had a two server config, looks like I could do that.
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