A few Cox internet service members have been having trouble accessing their e-mail accounts through Apple's Mail program. The connection seems to be fine and log-in works, but while Mail will show downloaded messages in the "Activity" window, they will not show up in an in-box. Additionally, a message of "mail cannot verify the identity of pop.central.cox.net" may appear.
There may be a recent update of the Cox e-mail servers that is contributing to this problem, since it seems to have cropped up in the past few days; however, this is unknown and some members (such as those in this Apple discussion thread have claimed this happening for a few weeks. According to Cox, its e-mail servers seem to be fine, but the problem persists for affected members.
Some have found that turning off SSL authentication for their e-mail accounts has helped the problem, which can be done in the "Advanced" section of the accounts settings in the preferences. To have Mail work continually you may need to toggle the SSL setting periodically, but this has helped a few people experiencing problems.
A work-around to at least accessing your mail is to use the Cox Web mail program at http://webmail.cox.net.
If you are having troubles with connections to Cox servers and know of a work-around, please let us know: http://www.macfixit.com/contactResources