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  2. Callback verification - Wikipedia

    en.wikipedia.org/wiki/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 ").

  3. Add or disable 2-step verification for extra security - AOL Help

    help.aol.com/articles/2-step-verification...

    2. Next to "2-Step Verification," click Turn on. 3. Select Phone number for your 2-step verification method. 4. Follow the on-screen prompts to complete the process. Sign in with 2-step for phone. 1. Sign in to your AOL account with your password. 2. Enter the verification code sent to your phone. 3. Click Verify.

  4. SMTP Authentication - Wikipedia

    en.wikipedia.org/wiki/SMTP_Authentication

    For example, messages may be relayed on behalf of different users. Use of this parameter is much less popular than using the command to grant relay privileges. SMTP Authentication is an "extension" in SMTP terms, so it requires server and client to use EHLO verb for greeting to indicate support for extensions, as opposed to the obsolete HELO ...

  5. Wikipedia:Discord - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:DISCORD

    The /auth command will send a link to authenticate with OAuth. The /whois and /revwhois commands will show information about an authenticated user. WikiBot – Responsible for adding helpful links when users post Wikilink and Template syntax. For example, if you post [[Wikipedia:Discord]], WikiBot will reply with an actual link to the page.

  6. 2-Step Verification with a Security Key - AOL Help

    help.aol.com/articles/2-step-verification-with-a...

    Sign in and go to the AOL Account security page.; Under "2-Step Verification," click Turn on.; Click Security Key.; Follow the onscreen steps to add your Security Key. Add additional recovery methods in case your Security Key is lost.

  7. AOL Mail - AOL Help

    help.aol.com/products/aol-webmail

    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

  8. Help:Two-factor authentication - Wikipedia

    en.wikipedia.org/wiki/Help:Two-factor_authentication

    In "Step 2" of the setup page, there is a box with a pattern which you have to point your device's camera toward. (Your device might ask you for permission to use the camera first.) If you can't scan the QR code, you can enter the "Two-factor authentication secret key" from "Step 2" of the setup page into the app, which gives you the same result.

  9. Message authentication code - Wikipedia

    en.wikipedia.org/wiki/Message_authentication_code

    However, non-repudiation can be provided by systems that securely bind key usage information to the MAC key; the same key is in the possession of two people, but one has a copy of the key that can be used for MAC generation while the other has a copy of the key in a hardware security module that only permits MAC verification. This is commonly ...