So last night I noted Thunderbird kept telling me it couldn’t connect to Cox’s email server. Now I run a spam filter so I telneted to the spam filter and it responded. But then I tried initiating a POP3 session from the command line to Cox’s smtp.east.cox.net. That failed spectacularly.
So now I know Cox proxies all web connection because I occasionally get a web pop-up stating they know about the issue and are working to resolve it.
I can give them a hint, ditch InterMail and go with Qmail.