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Ralph Scharping
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Exchange 2016 public folder "send as"

Hi.
We have Windows Server AD @ 2012r2 with an Exchange Server 2016 cu16.
We have mail-actived Public Folders but can not give "send as" rights to users or Groups.
Error is in German:
"Der Benutzer oder die Gruppe ... konnte nicht aufgelöst werden. Wenn es sich dabei um einen Prinzipal einer fremden Gesamtstruktur handelt, benötigen Sie entweder eine birektionale oder eine ausgehende Vertrauensstellung"
Workarounds like "https://support.microsoft.com/en-us/help/2983209/access-denied-when-you-try-to-give-user-send-as-or-receive-as-permissi" didn't help.
In ADSIedit we can give the "send as" rights.
With Powershell it seems there is something missing (skript?) in my system to use it, or its not possible with group-Objects ?

I try:
Add-ADPermission "security Group with mail activated" -ExtendedRights Send-As -user 'public Folder'

Error: (without german text)
    + CategoryInfo          : InvalidOperation: (:) [Add-ADPermission], LocalizedException
    + FullyQualifiedErrorId : [Server=MX,RequestId=81712a53-2dab-4271-a1a0-38a918c24615,TimeStamp=27.05.2020 11:32:06]
    [FailureCategory=Cmdlet-LocalizedException] DADD2B80,Microsoft.Exchange.Management.RecipientTasks.AddADPermission
    + PSComputerName        : exchange.domain.local

Giving right to "send on behalf" is not a problem.
I'm sure we could change the rights for a few months.
Testing with an Backup from before CU16 (I think it was CU11) 25 days ago did not help.
We don't have an older Backup.
Has anyone an Idea what to do?

Thanks!
PowershellExchangeWindows OS

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Last Comment
Ralph Scharping

8/22/2022 - Mon
Tom Cieslik

Please try use PowerShell command

Add-RecipientPermission -Identity 'YourPublicFolderName' -Trustee "John" -AccessRights 'SendAs' 

Open in new window


Then Add public folder to User Outlook, restart Outlook,  enable Sent From field and try to create new email and select PublicFolder as sender
arnold

Public folder versus shared mailbox.....
Not sure a public folder can be used as a sender... A shared mailbox might be what you are thinking of.

I think the example Tom provided should apply to a shared mailbox not a public folder.
I think, public folder is a storage resource.
Ralph Scharping

ASKER
Thanks Tom and Arnold.
The Powershell command is not found, neither in Poweshell on DC nor an Exchange Management Shell on MX.
We are still using a few mail activated public folders with send as rights from users, so I am sure this can be used like this.
Using ADSIedit I could do what we need for the Moment. But there is something wrong in the AD rights and that make me a bit nervous....
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rwheeler23
arnold

ASKER CERTIFIED SOLUTION
arnold

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Ralph Scharping

ASKER
I will try next time. for the Moment we user ADSIedit as workaround.
Thanks a llot