What to Do if You Receive Mailer-Daemon Spam Scan your computer and devices for malware. When you scan your computer for malware, make sure you’re disconnected from the internet, and change all of your account passwords when you’re done. Report the mailer-daemon spam as junk mail. Tell all of your contacts. Click to see full answer. Moreover, how do I get rid of Mailer Daemon?To remove the mailer daemon messages, you must find the source of the email problem. Read the email you receive from mailer daemon and check the email address to make sure you entered it correctly. If the email address is correct, the address may no longer exist. Read the details in the mailer daemon email message.Likewise, why do you get mailer daemon failure notices? The Mailer-Daemon notifications occur when the program recognizes the emails as spam or because the compromised mail program is sending to nonexistent addresses. Likewise, what does it mean when you get mailer daemon? When you get a message from a “MAILER-DAEMON” or a “Mail Delivery Subsystem” with a subject similar to “Failed Delivery,” this means that an email you sent was undeliverable and has been bounced back to you. These messages are sent automatically and often include the reason for the delivery failure.Is Mailer Daemon a virus?If they send an email to an addresses that no longer exist, then you’ll receive mailer-daemon spam. If you open an email containing a virus or worm, it can infect your computer and begin sending infected messages to everyone in your address book.