Hybrid : Full access permissions and automapping

I am trying to give Exchange Online user John@contoso.com Full access permissions and automapping to On-Prem mailbox Sales@contoso.com but am getting the error below:

Following: https://practical365.com/exchange-online/configuring-exchange-hybrid-cross-forest-permissions/

Set-ADUser -Identity John@contoso.com -Add @{msExchDelegateListLink/BL=Sales@contoso.com}
At line:1 char:79
+ Set-ADUser -Identity John@contoso.com -Add @{msExchDelegateListLink/B ...
+                                                                               ~
Missing '=' operator after key in hash literal.
At line:1 char:79
+ Set-ADUser -Identity John@contoso.com -Add @{msExchDelegateListLink/B ...
+                                                                               ~
The hash literal was incomplete.
    + CategoryInfo          : ParserError: (:) [], ParentContainsErrorRecordException
    + FullyQualifiedErrorId : MissingEqualsInHashLiteral

Any ideas folks?
Christian HansUndecided... Asked:
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Vasil Michev (MVP)Commented:
Automapping is not supported cross-premises. Even if it was, the formatting is off, those are two separate attributes: msExchDelegateListBL and msExchDelegateListLink. The first one is a 'backlink', this it's set on the delegate object and refers to the mailbox on which permissions are granted, the second one host the delegate DN.
Jose Gabriel Ortega CastroEE Solution Guide/Topic Advisor and CEO Faru Bonon ITCommented:
I think you're using the wrong cmdlet.


connect to exchange online
and run

Set-ExecutionPolicy RemoteSigned
$UserCredential = Get-Credential
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection
Import-PSSession $Session -DisableNameChecking
Add-MailboxPermission -Identity "Sales@contoso.com" -User "John@contoso.com" -AccessRights FullAccess -InheritanceType All

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The other solution would be from the on-premises itself, same cmdlet but on the Exchange Server PS console:
Add-MailboxPermission -Identity "Sales@contoso.com" -User "John@contoso.com" -AccessRights FullAccess -InheritanceType All

Open in new window

Give it a try

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