iOS11 issue with Exchange 2016 / O365 Accounts

Discussion in 'iOS 11' started by nuzzy, Sep 19, 2017.

  1. nuzzy macrumors member

    Jul 21, 2008
    NH, USA

    Looks like there's an issue if you upgrade to iOS11. Anyone who connects to an Exchange 2016 server or Office 365, won't be able to send, forward or reply to an email, they'll get an error saying the message was rejected by the server.

    To fix this, head to the mail account in Settings and re-enter the user's Exchange password. Hopefully they'll patch this before the storm hits.
  2. chrfr macrumors 604

    Jul 11, 2009
    I've had this problem. Usually, re-sending the message from the Outbox resolves it. I'll try to re-enter the password in hopes that fixes it. That does seem to resolve the problem, at least for one email. Thanks.
  3. Ianblackburn macrumors member

    Feb 21, 2011
    having the same issue. Seems to be related to attachments - emails without them are sent ok as far I can tell
  4. chrfr macrumors 604

    Jul 11, 2009
    I was getting rejected by server errors even without attachments. I hope this gets sorted out very soon.
  5. AsherN macrumors 6502

    May 11, 2016
    I had no issue with the GM from the Beta program.
  6. bilibug macrumors regular


    Aug 27, 2008
    Stockton NJ
    A phone reboot fixed it for me. Had this happen today as well as a few weeks ago.
  7. jeepik macrumors 6502

    Oct 2, 2009
    its a big issue for me...reboots email account recreations don't matter. happens on both iPhone and iPad pro with IOS11 GM
  8. chrfr macrumors 604

    Jul 11, 2009
  9. mikosk macrumors regular

    Sep 20, 2013
    Are you kidding? Major iOS release and it breaks the email that is most common for business users?!? They need to get this resolved today.

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8 September 19, 2017