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  2. Email authentication - Wikipedia

    en.wikipedia.org/wiki/Email_authentication

    Email authentication, or validation, is a collection of techniques aimed at providing verifiable information about the origin of email messages by validating the domain ownership of any message transfer agents (MTA) who participated in transferring and possibly modifying a message. The original base of Internet email, Simple Mail Transfer ...

  3. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  4. Formal verification - Wikipedia

    en.wikipedia.org/wiki/Formal_verification

    Formal verification. In the context of hardware and software systems, formal verification is the act of proving or disproving the correctness of a system with respect to a certain formal specification or property, using formal methods of mathematics. [ 1] Formal verification is a key incentive for formal specification of systems, and is at the ...

  5. Sender Policy Framework - Wikipedia

    en.wikipedia.org/wiki/Sender_Policy_Framework

    Sender Policy Framework ( SPF) is an email authentication method which ensures the sending mail server is authorized to originate mail from the email sender's domain. [ 1][ 2] This authentication only applies to the email sender listed in the "envelope from" field during the initial SMTP connection. If the email is bounced, a message is sent to ...

  6. Use AOL Official Mail to confirm legitimate AOL emails

    help.aol.com/articles/what-is-official-aol-mail

    Use AOL Official Mail to confirm legitimate AOL emails. AOL Mail is focused on keeping you safe while you use the best mail product on the web. One way we do this is by protecting against phishing and scam emails though the use of AOL Official Mail. When we send you important emails, we'll mark the message with a small AOL icon beside the ...

  7. Use AOL Certified Mail to confirm legitimate AOL emails

    help.aol.com/articles/what-is-aol-certified-mail

    When you open the email, you'll also see the Certified Mail banner above the message details. When you get a message that seems to be from AOL, but it doesn't have those 2 indicators, and it isn't alternatively marked as AOL Official Mail, it might be a fake email. Make sure you mark it as spam and don't click on any links in the email.

  8. Message authentication code - Wikipedia

    en.wikipedia.org/wiki/Message_authentication_code

    Message authentication code. In cryptography, a message authentication code ( MAC ), sometimes known as an authentication tag, is a short piece of information used for authenticating and integrity -checking a message. In other words, to confirm that the message came from the stated sender (its authenticity) and has not been changed (its integrity).

  9. What is Two-Factor Authentication? - AOL

    www.aol.com/two-factor-authentication-120048004.html

    Two-Factor Authentication. Quite simply, Two-Factor Authentication requires two forms of user authentication rather than a single form to allow you to access a digital system. By requiring two ...