Can not receive or send Email R.received the following message:

Unable to send or receive messages for the Charter (Genowak) account. Header download for the 'Sent Items' folder did not complete. Could not select 'Sent Items' on the IMAP server. Try updating the folder list and then try again.

Server Response: The server did not respond to this IMAP command before the connection was terminated.
Server: 'IMAP.charter.net'
Windows Live Mail Error ID: 0x800CCC0F
Protocol: IMAP
Port: 143
Secure(SSL): No

Earlier the same message but referred to Drafts folder.