Well you do not need to setup this in Tryton itself. There are many options:
- Use a different from header than the envelop.
- Set a
Reply-Toheader. - Configure the SMTP server to allow “tryton” user to send with different from envelop.
- Configure the SMTP server to forward to the proper email server using the login/password of the from address.
I would recommend OpenSMTPD as mail server for such configuration because the configuration is very simple and clear.