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How to configure mail enabled Office 365 Public Folders to accept mail from external domains?

Last Update: 7/21/2017 11:32 AM
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​How to configure mail enabled Office 365 Public Folders to accept mail from external domains?

Answer:

 

The following remote PowerShell commands can be run to configure some or all mail enabled Office 365 Public Folders to accept mail from external domains:

get-publicfolder -identity "\PFAlias" | Add-PublicFolderClientPermission -User Anonymous -AccessRights CreateItems

or

get-publicfolder -recurse | Add-PublicFolderClientPermission -User Anonymous -AccessRights CreateItems

 

Notes:

  • This step is important during a Public Folder migration, when running in hybrid mode.

  • If external domains cannot send mail to the mail enabled Public Folder email addresses then the above scripts need to be run.