Forum Discussion

Copper Contributor

Jun 18, 2017

Hide members in office 365 distribution list

How can i hide members in an office 365 distribution ?

We don't want recipients to be able to see members of the distribution list when they expand the list.

Is there any way this can be achieved

VasilMichev
Jun 18, 2017
Only internal recipients can expand DLs. You can simply use a Dynamic DG, or a moderated DG in order to prevent the expansion. Another option is to limit this functionality in Outlook by using the DisableDLExpansion reg key. Read here for more info: https://www.slipstick.com/exchange/prevent-distribution-group-expansion/

VasilMichev
MVP
Jun 18, 2017
Only internal recipients can expand DLs. You can simply use a Dynamic DG, or a moderated DG in order to prevent the expansion. Another option is to limit this functionality in Outlook by using the DisableDLExpansion reg key. Read here for more info: https://www.slipstick.com/exchange/prevent-distribution-group-expansion/
- N V
  Copper Contributor
  Jun 18, 2017
  Thanks, Dynamic DG did the trick :)
- Deleted
  Sep 19, 2017
  Is there a way we can change the behaviour of Office 365 Group email addresses so that they cannot be expanded? For private groups we expected that the membership would be private.
  
  Editing Outlook permissions is not practical or possible.
Salvatore Biscari
Silver Contributor
Jun 18, 2017
When you send the email, you could put the DL in the CCN: field, instead of the TO: field.