I'm using RUT360 with RUT36X_R_00.02.06.1.
In this case I'm not allowed to use an external email-adress to use for the email-to-sms-gateway. So I set up a local email-server (hMailServer), which is working fine with Thunderbird with and without SSL. Not so much with the RUT, I even tried using + instead of 00 ahead of the country code.
What am I doing wrong? It checks for email, but what happened then? Password wrong? Too much text? How can I look behind this message?