SMTP.mail.me.com failed

NozzaL wrote:

I’m getting the outgoing server connection to smtp.mail.me.com failed, but only on my iPhone. Mail works fine on the Mac and iPad; any ideas what’s causing this?

Thanks

Most likely the password for the outgoing mail server is missing or has been changed. The easiest way to fix it is to delete your @me.com account, restart your phone, and add it back.

An answer may lie here --> iCloud Mail server settings for other email client apps