This is most likely not possible but I wanted to see if there was any way to do this.
We have a company wide distribution list that users occasionally end up replying all to. Now I know user training is always an option but with a large global company that is not always a practical solution. I am trying to avoid restricting who can send to the DL as I would like to still allow all users to email it but prevent the reply all responses.
With Office365/Exchange is there any way to set a DL to only accept messages with it is emailed as a BCC? or if not does anyone have a solution other then user specific message delivery restrictions?