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  2. Email authentication - Wikipedia

    en.wikipedia.org/wiki/Email_authentication

    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 ...

  3. Callback verification - Wikipedia

    en.wikipedia.org/wiki/Callback_verification

    Callback verification. Callback verification, also known as callout verification or Sender Address Verification, is a technique used by SMTP software in order to validate e-mail addresses. The most common target of verification is the sender address from the message envelope (the address specified during the SMTP dialogue as "MAIL FROM").

  4. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    The request contained valid data and was understood by the server, but the server is refusing action. This may be due to the user not having the necessary permissions for a resource or needing an account of some sort, or attempting a prohibited action (e.g. creating a duplicate record where only one is allowed).

  5. 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 ...

  6. AOL Mail

    mail.aol.com

    Explore our AOL Mail product page to learn even more. Start for free. Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. PHP - Wikipedia

    en.wikipedia.org/wiki/PHP

    PHP has a direct module interface called SAPI for different web servers; [272] in case of PHP 5 and Apache 2.0 on Windows, it is provided in form of a DLL file called php5apache2.dll, [273] which is a module that, among other functions, provides an interface between PHP and the web server, implemented in a form that the server understands. This ...

  8. 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.

  9. Email sender verification notice - AOL Help

    help.aol.com/articles/email-sender-verification...

    Email sender verification notice. As part of AOL's commitment to user safety, an alert message will appear if the third-party mail client you're using adds a message to your inbox, or if we believe your account may have been compromised. If you've confirmed the message is safe, we recommend you review your connected devices, confirm or delete ...