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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.
Please be aware that unrecognized emails in your sent folder is not a sign of a spoofed account and is an indicator that your account was hacked. • Your contacts are receiving emails that you didn't send. • You receive spam emails from your own email address. • You're getting MAILER-DAEMON messages that don't match any messages you sent.
Review your AOL Mail settings. Hackers may change the settings in your AOL Mail account to disrupt your inbox or get copies of your emails. Access your mail settings and make sure none of your info or preferences were changed without your knowledge. Things to look for include: • Email filters • Display name • Email signature • Blocked ...
Experts explain how to block emails using your mail server, what to do if you receive a suspicious email, and why you get these annoying emails in the first place. Learn how to stop spam texts and ...
5. Abandon ship. If all else fails and you’re still receiving enough spam emails to render your inbox impossible to use, it may be time to switch over to an entirely new account.
Why did I receive an email from MAILER-DAEMON? Learn about why you might have received a delivery failure notice, and how to determine what's inside the message. AOL Mail for Verizon Customers · Apr 30, 2024
502 Command not implemented 503 Bad sequence of commands 504 Command parameter is not implemented 504 5.5.4 Unrecognized authentication type [3] 521 Server does not accept mail [5] 523 Encryption Needed [6] 530 5.7.0 Authentication required [3] 534 5.7.9 Authentication mechanism is too weak [3] 535 5.7.8 Authentication credentials invalid [3]
If you're repeatedly getting delivery failure errors when sending messages to AOL Mail customers, it is most likely due to spam blocking on AOL's servers. While you may be following at the rules for sending mail, it's likely the address you're sending mail from is hosted on a server our system had identified as "abusive".