title: Exchange 2010 Transport Agent - Rewrite Reply-To header
body: <p>Looks like the MailItem.Message.ReplyTo property is read-only.   Anyone know a way to set ReplyTo in Mailitem.Message to a new address?</p>
  
  <p>Working on a Exchange 2010 Transport Agent to handle some dmarc issues with our Exchange 2010 Distribution Groups.   I can change the From header and get our DG email delivered, but if could the ReplyTo header to the original email addresses, our recipients would be able to reply directly back rather than having to copy and paste the original email address I'm adding to the body of the email. </p>