Office 365 sent mail rejected by server

Office 365 mail is rejected by the server in the last two betas of iOS 11. This is when using the native iOS mail app. Anyone else experiencing this issue?


I‘ve readied the mail account several times, however the same issue seems to persist. There are no issues with the amount when using the outlook app for iOS.

Replies

I’m having the same issue on 6 different devices, as are others. The only fix currently available is to cycle flight mode, then try sending again, for me the messages will end up going after a few tries.


Very annoying to say the least.


I’ve gone back to using the Outlook application until this is fixed.


PS - Recommend anyone with this issue submit a bug report.

It’s happening on the GM too. I hope they fix it.

This needs to be fixed ASAP. Experiencing this on every device on iOS 11 (even GM).

Will be a support nightmare once this is released to the general public.

More discussion here: Exchange Activesync iOS 11 issues


I have logged a bug for this and will let you know the results.

Apple have responded!


https://support.apple.com/en-us/HT208136