Oct 26 2019 07:42 PM
Hi,
Quite a large number of mailboxes are not sync to Cloud because special characters are not supported in Office 365.
Is invalid character support in:
- public folders where email address has special character?
- distribution list?
- mail contact?
Thank you
Oct 27 2019 05:48 AM
SolutionYou'll need to clean that up or prevent the sync of those objects by filtering in AADConnect
here is some info on what is allowed:
and the tool that can help identify and fix these:
Oct 30 2019 01:31 AM
I did quite a bit of testing on this, there are some nuances and you can add back addresses with special characters as a secondary alias and that will work. See https://cloudrun.co.uk/exchange-online/special-characters-in-upn-and-email-addresses-in-office-365-m... for more info.
Nov 19 2019 05:40 PM
I have removed invalid characters from all email addresses (not display name). However the mailbox is still not sync to Office 365.
Getting NDR:
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