SMTP based rule won't work!

am trying to make my Gmail uploads go through a giver WAN (better upload) but when I add an SMTP based rule the first problem is that the rule auto reset to any protocol for tcp and even with Enforced algo it does not work, and secondly when checking under Network>Active session, there is only HTTPS going out.
what do you think ?

Best regards.

I think you have it configured wrong, please contact your reseller or open a support ticket via our website:

By default Gmail uses SSL on TCP port 465, not the standard port 25. You can configure your outbound rule with this port, or by using as destination domain. The best way to know the ports you are using, is to check them in your email client configuration.