Forum Discussion

Copper Contributor

Aug 15, 2019

Automapped mailbox - Migration

Hi everyone. We're looking at an AD consolidation project moving users from one internal forest to another with 1 o365 tenant in the cloud. Multiple forest on prem to 1 O365 tenant. We're ...

Iron Contributor

Aug 15, 2019

Hey CoopBK

My understanding is the automapping data is stored with the AD user under msExchDelegateListLink

Get-ADUser "Mailbox01" -Properties msExchDelegateListLink | Select msExchDelegateListLink

The above should show you which users get the Mailbox01 automapped in Outlook, but I'm away from my lab and unable to test right now.

Hope this helps

Cheers,

Mark

VasilMichev
MVP
Aug 16, 2019
The MSExchDelegateLinkListBL is the "reverse" attribute, which will give you a list of all the mailboxes a given user has automapped.
- CoopBK
  Copper Contributor
  Oct 15, 2019
  So all the mailboxes are in office 365 so is there a way to see it then? VasilMichev
  - VasilMichev
    MVP
    Oct 15, 2019
    Nope. At least not a supported way. You can use the method I've outlined here, but that requires you to add folder-level permissions: https://www.michev.info/Blog/Post/1926/peeking-behind-the-curtain-of-exods-fetching-the-adrecipient-object
    
    In any case, you can simply report on the Full Mailbox permissions instead and assume they're all with automapping set to $true.