Although mail servers is often configured to silently discard email, the SMTP RFC strongly discourages this Unless of course senders are acknowledged to become fraudulent or unwanted. For all other mail, the RFC suggests returning undeliverable mail by having an error code. Working with the forefront of technical guidance, https://itsupport66665.snack-blog.com/26705135/how-remote-technical-support-can-save-you-time-stress-and-money