I am seeing incorrect email address on the email headers being sent from the website even if site email address has been updated correctly.
1. Login to your Acquia Cloud account and select the application for which you are seeing the email address issue.
2. Click the name of the environment for which you are facing issue, and then click Configure.
3. In the Sendmail Path field, update your desired email address and save the configuration.
In case of any questions, please contact Acquia Support via a support ticket.