I too am experiencing the same issues with not being able to send outgoing messages via my iphone. This has only been an issue lately. I have deleted my account and readded it without success. I have cross referenced both my incoming and outgoing mail settings:
incoming mail server:
host name: imap.cox.net
Outgoing mail server:
host name: smtp.cox.net
use SSL is selected
server port: 465
My search has concluded this is not an isolated error. Several users are experiencing similar issues. Has anyone been able to find a fix?
"the connection to the server "smtp.cox.net" on port 465 timed out"