FUCK OFF !!
Sort the fucking bugs in your system out before sticking it online and wasting an hour of my time or even better than that why not get your own fucking servers instead instead of another existing server locking you out and refusing a connection.
I set up a mail account in 1 minute with no hassle at all as they have their own servers.
Thunderbird is an add on to an existing email account because they dont have their own servers.
Rubbish so into my Trashcan you go.