I have been using mail on my new IPad4 for a few days without a problem but am now unable to send mail. An error window appears saying that "a copy has been placed in my outbox. The senders address was rejected by the server". Any solutions?

iOS: Unable to send or receive email

http://support.apple.com/kb/TS3899

Can’t Send Emails on iPad – Troubleshooting Steps

http://ipadhelp.com/ipad-help/ipad-cant-send-emails-troubleshooting-steps/

iPad Mail

http://www.apple.com/support/ipad/mail/

Try this: Delete the account in Mail and then set it up again.

 Cheers, Tom 😉

15/11/2015? What calendar are you using? 🙂

Stuart Hodgson wrote:

Thanks, after some more research and time trying various settings and deleting and re-setting email accounts all now seems ok. Also the problem was apparent when using a free wifi hotspot and this may have been part of the problem. Thanks anyway for your input.

Stuart

probably because the SMTP settings in your iPhone were not compatible with

that particular wifi carrier's