I've a vps with plesk running, all it's working fine except for sending email. Most of the email remain in the queue and a first look to the maillog is show that the receiver refused since the server fqdn is not correct. I've searched around the plesk panel, but maybe I'm missing somenthing...is a parameter configurable only via console?
Depends on the version of Plesk you are using! Versions < 10 don't have an explicit settings in the panel and you have to configure it via hostname
command. Versions >= 10 has a handy field in the settings.