Mercury can bind to a specific network interface for incoming traffic but for outgoing it relies on Windows. There is more information about how that works in this link:

http://stackoverflow.com/questions/2065495/using-a-specific-network-interface-for-a-socket-in-windows

/Rolf 

Hi all,

I have multiple IP address's on my server, the "primary IP" is NOT the IP address I want the Mercury-E module to be connecting to the outside world from.
How can I bind the SMTP client to open a connection from one of the other IP.

So I wish to set the source IP/Interface that Mercury-E uses?

Cheers
Adam