I'm using sendmail to send Mails from PHP and also forward some mails addressed to the server to a list of external mail-providers. The forwarding is done via an entry in /etc/mail/virtusertable:
In my /etc/aliases I include the mail list file:
This setup works so far but I wanted to ask how it is possible to change the Reply-To Header of mails sent to the virtual user
testuser via sendmail.mc? And if not is there another way to do this?