The user is either not valid SMTP address

Question

Hi All

i have a shared mailbox. i want to give shared mailbox access to one of my users calendar. i am getting error. i dont see any issue with SMTP address. the shared mailbox is created in onprem and migrated to online.

Add-MailboxFolderPermission -identity ******@contoso.com:\calendar -user ******@contoso.com -accessrights editor

The user "****@contoso.com" is either not valid SMTP address**

Answer 1

Hi @Glenn Maxwell ,

 

I tried to test in my environment and can reproduce what you described.

So, I looked up the documentation and I found out that this is an expected behavior. The user parameter mail-enabled security principals (mail-enabled accounts or groups that have security identifiers or SIDs that can have permissions assigned to them), so the shared mailbox type is not supported.
Please refer to the following documents.

Add-MailboxFolderPermission

In your situation, if you do want to make it work, you can consider converting the shared mailbox to a regular user mailbox.

Here's a similar post for reference:
O365 Add-MailboxFolderPermission Error - user not valid
(Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.)

 

Best regards

Shaofan

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