[Resolved] After upgrading to iOS 11 you may receive a "Cannot Send Mail" error when using native mail

Apple is reporting that after upgrading to iOS 11 some users are receiving the following error when they try to send emails: "Cannot Send Mail. The message was rejected by the server."

Details of this issue can be found on Support.Apple.com.  Apple is working with Microsoft on a resolution.  

If you have users who are impacted by this, they may want to leverage VMware Boxer as a workaround.  Email should flow normally from Boxer.  

To fix the issue, update to iOS 11.0.1 or later.

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