Forum Discussion
Outlook question - re Exchange Online (Plan 1) mailbox
I figured out that prob some more additional changes are required as HuigGuijt suggested to get this working properly - might help someone else if you are sorted in the mean time:
just providing changes - would recommend to do a bit of your own research on this:
On client set registry key:
HKEY_CURRENT_USER\Software\Microsoft\Office\x.0\Outlook\Preferences
DWORD 32 > DelegateSentItemsStyle value = 1
On Exchange - PS:
MessageCopyForSentAsEnabled needs to be set to false
To check the current status:
get-Mailbox <*shared mailbox> | select MessageCopyForSentAsEnabled
Need to stop the the automapping:
To fix the issue that the default email as From is being selected Automapping mailboxes for the shared mailbox / the mailbox the user has read/manage / 'send as / on behalf permission to' needs to be disable:
Remove-MailboxPermission -Identity <*shared mailbox> -User '<*mailbox that has the permission>' -AccessRight FullAccess
Add-MailboxPermission -Identity <*shared mailbox> -User <*mailbox that needs the permission>' -AccessRight FullAccess -InheritanceType All -Automapping $false
you then add the mailbox as an additional mailbox and authenticate to it with the users own credentials. This will create a separate .ost file for the shared / per permission accessed mailbox and won't fill up the users own one!
hope this helps someone as it took me a while to figure this all out
