i got my own server and i have 3 site on it every one has its own cpanel

i recieve my mails on windows live mail and it was working fine till yesterday

suddenly one of them got this error

Unable to send or receive messages for the Mai Share account. Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity.

Server: 'mail.maishare.com'
Windows Live Mail Error ID: 0x800CCC0F
Protocol: POP3
Port: 110
Secure(SSL): No

but the other two mails working good

so whats wrong?

The server terminated the connection.

It could be server problems, network problems, or a long period of inactivity.

what more can we tell you without being able to login to your control panel and test it?