I am having the same issue described here:
http://forums.cox.com/forum_home/internet_forum/f/internet-forum/19808/fix-for-folder-inbox-has-been-closed-on-mail-server-127-0-0-1
I am having trouble...
Hi Mental, when trying to access your Webmail, are you seeing a 127.0.0.1 error, or just the "unable to connect to mail server" message? -Becky, Cox Support Forums Moderator