Comment on Microsoft Silently Dropping Emails – a Sad but True Story (2020)parentComments−account425yBackscatter spam only happens with a misconfigured email service. If you are not going to deliver the mail, reply with an error during submission, don't send a automatic notification email to the return address.
Comments
Backscatter spam only happens with a misconfigured email service. If you are not going to deliver the mail, reply with an error during submission, don't send a automatic notification email to the return address.