StackRegent 0.17.7
PHP functions that start programs or shells are switched off for websites by default (panel tools exempt); webmail no longer takes host names another site already uses.
How to update: in the administrator panel, open Tools & Settings → Updates, click Check now, then Install. Websites, mail and DNS keep running while the panel updates. SHA-256 of the package: c17a05e5566e5c7a06cf280ebd8efa24209a187b88695587e67b82676c677e6f