Cannot Send Email From Iphone All Of A Sudden

When I send a test email to myself or other adresses I receive a "Invalid Sender Address" message. This just started happening and I do not know why. My suddenlink account works, as I tested it on my computer. Soemthing to do with the iPhone or the wireless service.

I Know the Answer!

I have the same question
Request More Information

Current Answers

There are currently no answers that have been posted for this question.
Be the first to post an answer!

Remember that you can earn up to 1,100 points for every answer you submit. The better the quality of your answer, the better chance it has to be accepted.

AT&T Wireless Knowledge Base Results

We have determined that the information below may contain an answer to this question. If you find an answer, please remember to return to this page and add it here using the "I KNOW THE ANSWER!" button above. It's that easy to earn points!

Answer Center | AT&T
...) Send and receive Multimedia Messages (MMS) Place and receive Phone/PTT calls Access the BlackBerry browser Access the MEdia Net browser BlackBerry Instant Messenger edge/gprs (lower-case letters): The BlackBerry device is within AT&T coverage, verify network selection is required for reliable data transfer. Verify the wireless...
Answer Center | AT&T
... site from AT&T. Attempt to the wireless network. Messaging-MMS. Send or receive MMS. Sending a picture message (MMS): Switch Accounts MMS New Custom In the "To" field, enter the recipient's phone number. NOTE: When sending an Text Message (SMS) to an international destination, please remember to someone other then an AT&T wireless services subscriber, verify that the carrier is supported...
Answer Center | AT&T
... the device . Send If unable to send or receive an Text Message, please contact AT&T wireless services customer Care Receiving a MMS: Scroll to "Inbox," press Scroll to desired message, press If unable to send or receive an SMS message, please contact AT&T Customer Service for wireless customers Deleting a MMS: Scroll to "Delete," press Deleting a Message: Scroll to desired message and press...