check dns entry is correct before request to Let's Encrypt (apache and nginx plugin)
check dns MX entry is correct before request to Let's Encrypt (apache and nginx plugin)
check if we already have a symlink and if he's valid (apache and nginx plugin)
force ssl field to on when use Let's Encrypt (api access)
disable ssl tab when use Let's Encrypt (webgui)
check dns entry is correct and MX domain
check if is a symlink and is correct (if target is same)