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  2. Fix problems reading or receiving AOL Mail

    help.aol.com/articles/fix-problems-reading-or...

    Learn about delivery delays. Messages are often delivered right way though very rarely there may be a delay in transit. This is usually due to problems on the mail server, heavy internet traffic, or routing problems. Unfortunately, other than waiting, you won't be able to determine if the message is delayed or undeliverable.

  3. Why did I receive an email from MAILER-DAEMON? - AOL Help

    help.aol.com/articles/what-is-a-mailer-daemon...

    The most common reason for a failed delivery is that the email address entered isn't valid. If the delivery failure message says the account doesn't exist double check the spelling of the address you entered. A single misplaced letter could cause a delivery failure.

  4. Find delivery delays or identify the sender in AOL Mail

    help.aol.com/articles/use-full-headers-to-find...

    An email’s full headers include info about how it was routed and delivered and the true sender of the email. View the full headers to find out where an email was delayed or if the real sender disguised their email address. View the full header of an email. 1. Click an email to open it. 2. Click the More drop-down in the top menu. 3.

  5. List of SMTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SMTP_server_return...

    550 Requested action not taken: mailbox unavailable (e.g., mailbox not found, no access, or command rejected for policy reasons) 551 User not local; please try <forward-path> 552 Requested mail action aborted: exceeded storage allocation

  6. Greylisting (email) - Wikipedia

    en.wikipedia.org/wiki/Greylisting_(email)

    If the sending MTA of the site is poorly configured, greylisting may delay the initial email link. In extreme cases, the delivery delay imposed by the greylister can exceed the expiry time of the password reset token delivered in email. In these cases, manual intervention may be required to whitelist the website's mailserver such that the email ...

  7. Bounce message - Wikipedia

    en.wikipedia.org/wiki/Bounce_message

    Although the SMTP is a mature technology, counting more than thirty years, its architecture is increasingly strained by both normal and unsolicited load. [2] The email systems have been enhanced with reputation systems tied to the actual sender of the email, with the idea of recipient's email servers rejecting the email when a forged sender is used in the protocol.

  8. Internet outage latest | Airlines, businesses, border ... - AOL

    www.aol.com/news/internet-outage-latest-airlines...

    A major internet outage affecting Microsoft is disrupting flights, banks, media outlets and companies across the world, with problems continuing hours after the technology company said it was ...

  9. Use full headers to find delivery delays or a forged email's ...

    help.aol.com/articles/use-full-headers-to-find...

    An email's full headers include information about how it was routed and delivered as well as information about the true sender of the email. View the full headers to find out where an email was delayed or who really sent an email with a forged address. View an email's full header. 1. Sign in to your AOL Mail account. 2. Click on an email to ...