Yes, I can check email using the webmail on cox.net. I orefer to use my local email client, Windows Live, which was working fine yesterday, but not this morning. I have double-checked all my settings, everything is exactly like it was prior to the Cox maintenance window. I called support and they insisted on repeating all the checks I had already done, and decide the problem was with Windows Live, because they did not see any issues logged in their system for email servers. This is a ridiculous determination, sa the only change since yesterday was Cox did a mantenance Window. Given that I am not the only person today to be postying about this, obviously something is wrong on the email server side.
I'm still having the problem. I called Cox tech support Wednesday evening 5 pm PT, and a ticket was opened at that time. My ticket was definitely logged because about an hour ago I got a email "survey" relating to my experience with tech support.
I have tried the same thing. I am no expert but my experience has been that ping only works with smtp.cox.net but not pop.cox.net. By the way, whenever I hear the word "upgrade" I habitually anticipate trouble.