Hi, I can't get my mail out with thunderbird. It tells me I am using a self-signed certificate, but what can I do? Do I need create a cert or download ssl key pub from ispConfig configuration ? I think I have everything configured on the server side and ispConfig > ssl and Roundcube is ok! It sends and receives with Gmail without errors. I let Thunderbird self-configure and it gives me as information : Code: imap : mail.democrasite.com ; STARTTLS smtp : mail.democrasite.com ; STARTTLS I find it a pity that there is no HowTo for configuring at least one Opensource mail client like Thunderbird, in conjunction with the ispConfig Perfect Server tutorials.