Make sure it's smaller than 17 megs including all attachments, and if it is, and you are still getting the error, it could be treating the message as spam. Try editing the message, removing any hyperlinks in the message and see if that helps. Cox cable box error codes literally ruin the pleasure of watching tv, we have made a list of common cox cable issue and solutions.
Learn common errors customers may experience when activating Cox Mobile phone.. The first way to fix Cox problems is to reset the modem. Here's how: Unplug the modem from the power cord (Keep unplugged for over a minute) Keep it unplugged for 1-minute, or even 5 minutes