CANT SEND/RECIEVE EMAILS -OUTLOOK EXPRESS

Today i installed comodo firewall and now i can’t seem to send/recieve emails in outlook express i keep getting the following message -

Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Account: ‘pop3.homecall.co.uk (2)’, Server: ‘pop3.homecall.co.uk’, Protocol: POP3, Port: 110, Secure(SSL): No, Socket Error: 10053, Error Number: 0x800CCC0F

[color=purple]If anyone knows how i can sort this i would appreciate it.

Thanks (:WAV)