There should be a setting for Rogers that works on port 25 that does not require authentication as long as you are using on of their connections.
This answer requires a little more technical work. Does this work?
Go to Start -> Run, enter "cmd" in the box, and press the OK button :
In the black box that appears type "traceroute www.rogers.com" and press enter :
I don't think this is going to work for me since I'm not a rogers subscriber, but in your results there should be a line with "phub" in the name.
Take the part before the phub and substitute it into your smtp server name.
For example, if you see the name gw01.
beer.phub.net.cable.rogers.com, then your smtp server setting would be smtp.
beer.net.cable.rogers.com
When you are done type "exit" in the black box to close the window.