Have two email addresses. One receives mail normally. The second gives me the following error messages. Periodically it will work but usually it does not. I can read the mail if I go to my email provider's website. I have deleted and recreated the account following the directions of my email provider. 

error message:

"incorrect username or password" 

and also the following:

Unable to send or receive messages for the this account. An incorrect password was entered. The next time you send or receive messages, you'll be asked to enter your user name and password for this account.

Server Error: 0x800CCC90
Server Response: -ERR invalid user name or password.
Server: 'mail.twc.com'
Windows Live Mail Error ID: 0x800CCC92
Protocol: POP3
Port: 110
Secure(SSL): No

When sending I get:

The host 'mail.twc.com ' could not be found. Please verify that you have entered the server name correctly.

Subject 'test'
Server: 'mail.twc.com '
Windows Live Mail Error ID: 0x800CCC0D
Protocol: SMTP
Port: 587
Secure(SSL): No
Socket Error: 11004

Unable to send or receive messages for the this account. An incorrect password was entered. The next time you send or receive messages, you'll be asked to enter your user name and password for this account.

Server Error: 0x800CCC90
Server Response: -ERR invalid user name or password.
Server: 'mail.twc.com'
Windows Live Mail Error ID: 0x800CCC92
Protocol: POP3
Port: 110
Secure(SSL): No