We have a SMTP server setup on a server on our internal domain to relay emails from our internal reporting systems and multi function machines. The SMTP server forwards the emails out to our Office 365 mail server using an existing office 365 user. We are upgrading our security for all users to multi factor login and although I could use a app specific password, we are starting to use SendGrid instead of our 365 server for these. Plus we have people all the time reply to those emails when we specifically have it as part of the body of the email to not reply. I am using mailto:firstname.lastname@example.org now on the SMTP configuration of our internal server but it seems that the SMTP server is still relaying mailto:email@example.com instead of noreply. I don't see any settings on the STMP configuration for this. So why would it still be using admin and where would it get that? I have the login for the SendGrid to apikey and the apikey password.