You can not receive mail

You can not receive mail

It has a set of e-mail address in the POP.

There are times when you can not receive and when you can receive.

Even when its trying to reattempt the incoming server settings of POP,

Error message:
I could not connect to the mail server. Please check the mail server name and port number again.
You come out with.

We can normally at the time of setting.

Once you do, and always normal or you can receive e-mail?