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I am having the same issue described here:
I am having trouble accessing my email through Cox Webmail at 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 have NO trouble accessing my public email through the Webmail client, but when I try to access my personal email (the one associated with this account), I get this message:
"Unable to connect to mail server. Possible reasons: The mail server is (temporarily) down or there are network connection problems. Please try again in a few minutes."
The email box doesn't display my emails or even my email folders... again no problem with my other account (when used on same computer and web browser).
Something you can check is if the username has a email account attached to it. Go to Cox.com > Sign in with working username > View My Profile > User and email account tab. If there is no account, it will say "no email account" next to the broken username.
Other then that, this sounds like something that needs a ticket to corporate to fix. Previous threads had a moderator asking to contact them via firstname.lastname@example.org so might want to try that. My guess is something happened to the account after the migration to the new email system.
Becky, I technically saw both errors... I got the "unable to connect error" when signing in, but again it loaded an empty mailbox, and curiously, it also didn't display anything in the folder structure folder structure on the left panel of the webmail client... no inbox, sent mail, drafts, nothing. It would let me click "compose" and it I could actually type a test draft to my working cox email, but when I clicked "send" I got the 127.0.0.1 error.
Thankfully, the email worked this morning just fine. But of a half-hour ago, I can't access the webmail client. Is something going on?