SMTP-addresses not in sync with AD

We have an AADSync enabled tenant syncing the users to Office 365 and have ADFS running. We have NO Exchange hybrid setup. Mailboxes are on-premises Exchange. I accidently created for some users a ...

exchange

office 365

VasilMichev
Feb 28, 2018
You should be able to use the -WindowsEmailAddress parameter for this. The new address you specify should be set as the Primary SMTP, while the old primary one will be kept as secondary. The cmdlet will also work against synced users.

If that's not a viable solution for your scenario, you can force-delete the mailbox in O365 and provision the object anew. Use the method outlined here for fastest resolution: https://blogs.technet.microsoft.com/exchange/2018/01/17/permanently-clear-previous-mailbox-info/

VasilMichev

MVP

Feb 28, 2018

You should be able to use the -WindowsEmailAddress parameter for this. The new address you specify should be set as the Primary SMTP, while the old primary one will be kept as secondary. The cmdlet will also work against synced users.

If that's not a viable solution for your scenario, you can force-delete the mailbox in O365 and provision the object anew. Use the method outlined here for fastest resolution: https://blogs.technet.microsoft.com/exchange/2018/01/17/permanently-clear-previous-mailbox-info/

Jonathan Klein-Wiele

Copper Contributor

Mar 07, 2018

Ok, thanks guys, seems that the reply from Vasil worked. It needed some time but now I got the mails and could fix the issue!

Thanks also for all the other hints!

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SMTP-addresses not in sync with AD