Because automapping is not always working correct, just created this script to re-enable automapping with the correct settings. This script you need to run on the Exchange server.
# Created by Daag van der Meer # blog.van-daag.nl # This script gives the user full access to the mailbox. This will update also the folders below the inbox with the rights. Add-PSSnapin Microsoft.Exchange.Management.PowerShell.SnapIn; # Enter the mailbox name here $mailbox= "<mailboxname>" # Add here the usernames like "<USERNAME>", "<ÜSERNAME>" $users= "<USERNAME>", "<ÜSERNAME>" ####### Start of the Script. Do not edit below foreach ($user in $users){ # First disable AutoMapping Add-MailboxPermission -Identity $mailbox -User $user -AccessRights FullAccess -InheritanceType All -Automapping $false # Now enable Automapping Add-MailboxPermission -Identity $mailbox -User $user -AccessRights FullAccess -InheritanceType All -Automapping $true }