SMTP profiles and exceptions for smarthost

Hi,
It looks like that the SMTP profiles does only work for Antivirus and AntiSpam.
I need to use a smarthost where all standard mails will travel to.

In addition, I need now an option to bypass the smarthost to connect directly per SSMTP/submission (TCP587,465) to googlemail & co

I thought about NAT, but not sure if this is the best idea.

Any ideas how I can solve this issue?

Cheers,
Ciscoman