OK
I got it almost working
I found this
http://isp-control.net/forum/thread-4625-page-2.html
And the issue with receiving from thunderbird was that I've been using mail or pop.mydomain.com and only needed to use the domain to login to the server.
I still having issues to send using port 25 or 587...
It says the following:
The message couldn't be sent because connecting to SMTP server mydomain.com failed. The server may be unavailable or is refusing SMTP Connections. Please verify that your SMTP serve setting is correct and try again, or else contact your network administrator.
I'm almost there.
Suggestions are welcome.
Thanks.