It's not just iPhone users. Android users also cannot send email. I'm using the Gmail client on Android, and if I change the port to 578, the app says it's insecure, and my choices are to change it to something else, or back to what it was before the change. Consequently, I've been unable to send email since good "upgraded" their server security. I've been considering leaving Cox, as they're hideously expensive, and this is probably a good time to do it. I've been with Cox for nearly 20 years.
I meant port 587. The above was a typo.
