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MikhailFirsov-1277 avatar image
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MikhailFirsov-1277 asked KaelYao-MSFT edited

SendAs permission

Hello!

There's the shared mailbox with configured permissions:
182823-09.png


Nevertheless when Taylor David sends a message as support@contoso.com the following error arises:
182785-07-1.png

???

office-exchange-server-administrationoffice-outlook-itprooffice-exchange-server-mailflowoffice-exchange-server-connectivity
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AndyDavid avatar image
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AndyDavid answered

How long ago was the shared mailbox created? It may not be generated on the server yet.

You can update following:
https://docs.microsoft.com/en-us/exchange/email-addresses-and-address-books/offline-address-books/oab-procedures?view=exchserver-2019#use-the-exchange-management-shell-to-update-offline-address-books

Do you see it in OWA or the "All Users" list in Outlook?

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AndyDavid avatar image
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AndyDavid answered

Two possibilities:

  1. The Offline Address Book hasn't downloaded yet. Try adding the shared mailbox from the "All Users" Address list or Outlook online mode or Outlook Web App.

  2. The shared mailbox is hidden from the Address Book.





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MikhailFirsov-1277 avatar image
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MikhailFirsov-1277 answered

Yes, I thought about address book (downloading the full OAB didn't help) and don't understand this: although I did NOT check "Hide from address book" checkbox...
182816-10-0.png

...support@contoso.net does not show up in the address list:
182786-10-1.png

Advanced Find does see the mailbox but seems it's not enough:
182861-10-2.png

...mmm ...what can make a mailbox disappear from the address book???




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MikhailFirsov-1277 answered

That's it!!! It works after Get-OfflineAddressBook | Update-OfflineAddressBook!

AndyDavid, thank you so much for the help!

Regards,
Michael

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