As Tornevall Networks isn’t considered “operations safe” (by means, Tornevall Networks can never guarantee your uptime). However, since there are plenty of tunneling options it is possible to actually apply to smaller networks (depending on the network size). There are also virtualizations availabel, but the IPv4 networks are much more limited so we usually don’t create virtual environments (besides there’s neither automation nor billing systems available, since there’s no company in bottom of this service).
Most of the network ranges allows open SMTP since many services has those sections closed. Mostly because of abuse actually; so Tornevall Networks services for SMTP is regular which means bulk or spamservices are not allowed. Detected abuse will have your service shutdown instantly.
For more information about the tunneling options, take a look at https://docs.tornevall.net/x/EYCD