Hi all, MERRY CHRISTMAS FROM GREECE!!!

I am a Webnode user and i have created an email account with my domain (info@mydomain.gr). I created an account to Outlook Express 2007, setting POP3 and STMP and "...requires authentication..." as i should. I can send email through OE but i can't receive any, even if i ask Webnode to forward mails to another active mail account (e.g Gmail). I delete and rewrite the settings to OE "tool" but nothing happens... Is it something to do with Firefox? My firewall maybe? I am looking forward for your help because it is a professional email account and it slows down my work!! Thanks for your help in advance!!