John, did you cox email account transition to Yahoo yet? It sounds like the password for the email address on your iPhone isn't the same as what is on your iPad.
I don't know if it transitioned or not. I changed password on iPhone and was able to send emails, but when I just now tried sending email from iPhone with new changed password it said "Cannot send Mail. The connection to the outgoing server smtp.cox.net failed. ... "NO space left on device" What does that mean?
John, you will need to change the password on the SMTP server, however, before doing this, please delete any emails in the outbox.
