text: POP is not an error message. POP has to do with email and is the protocol used by most email clients to retrieve email.\n\nPOP also know as POP3 is short for 'Post Office Protocol'.\n\nPOP3 is a commonly implemented method of delivering email from the mail server to the client machine. Other methods include IMAP and Microsoft Exchange. The POP3 server specified in a person's email program specifies where to look for email that is directed to a particular email address. This should never be changed unless told to by the ISP or company IT department that provides the email address. ...