Forum Discussion
Invalid characters in UPN and email address
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
You'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:
3 Replies
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-migrations/ for more info.
Hi,
REF to https://cloudrun.co.uk/exchange-online/special-characters-in-upn-and-email-addresses-in-office-365-migrations/I have removed invalid characters from all email addresses (not display name). However the mailbox is still not sync to Office 365.
Getting NDR:
Reported error:
550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipient avc.dec@companny.xxx not found by SMTP address lookup
DSN generated by:
ME2Pxxxxxxx98.ausprd01.prod.outlook.com
You'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:
