Good news for Office 365 Hybrid Customer – Delegate Access is now possible for cross-premises Mailboxes

Hybrid customer always complaint about the fact that Office 365 users not being able to delegate access to On-prem (Or) On-prem users not being able delegate to Office 365.

The good news is that Microsoft started allowing this feature from April 2018.

To enable cross premises delegation you first need to configure:

  • For on-prem user to become a delegate of an Cloud user

Set-OrgnizationConfig -ACLableSyncedObjectEnable $True

  • For cloud user to become a delegate of an on-prem user

msExchRecipientDisplayType attribute for the remote mailbox in on-prem AD to be set to -1073741818

       Get-ADUser vijay.ragavan@ultima.com -Properties msExchRecipientDisplayType |         where {$_.msExchRecipientDisplayType -eq -2147483642} | Set-ADUser -Replace            @{msExchRecipientDisplayType = -1073741818}

Now you can ask the user to use their outlook to allow the delegation.  Send-AS and on-behalf also works as per the below article

Refer:

https://support.microsoft.com/en-us/help/3064053/overview-of-delegation-in-an-office-365-hybrid-environment

 

Hope this is useful.

VJ

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.