I'm using Office 365 E3 and I have a distribution group used for a mailing list including people inside our organisation and contacts outside too. I have a mail transport rule set up to prefix the subject like [My Group]
and add a 'disclaimer' to the bottom of the emails explaining why they're getting it and how to remove themselves. I'd also like to set the 'Reply-To' of all messages sent to the group so replies will by default go to the group instead of to the individual who sent the original email.
I've tried using a mail transport rule to set the Reply-To
header but no luck: I get an error saying "You can't set header 'Reply-To' with value '[email protected]'".
Is there any way to achieve this?