Suddenly my wife's emails are being rejected by Icloud. Anyone know how to fix this?

Hello Paul,

Thank you for the details of the issue your wife is experiencing with her iCloud email account. I recommend the following steps in the section titled “If you experience issues sending or receiving mail on iPhone, iPad, or iPod touch” in the following article for the issue you described:

iCloud: Troubleshooting iCloud Mail

http://support.apple.com/kb/ts4002

Thank you for using Apple Support Communities.

Best,

Sheila M.