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  2. SMTP Authentication - Wikipedia

    en.wikipedia.org/wiki/SMTP_Authentication

    SMTP Authentication, often abbreviated SMTP AUTH, is an extension of the Simple Mail Transfer Protocol (SMTP) whereby a client may log in using any authentication mechanism supported by the server. It is mainly used by submission servers, where authentication is mandatory.

  3. Email authentication - Wikipedia

    en.wikipedia.org/wiki/Email_authentication

    In the early 1980s, when Simple Mail Transfer Protocol (SMTP) was designed, it provided for no real verification of sending user or system. This was not a problem while email systems were run by trusted corporations and universities, but since the commercialization of the Internet in the early 1990s, spam, phishing, and other crimes have been found to increasingly involve email.

  4. Fix sending and receiving issues with third-party email apps

    help.aol.com/articles/cant-send-or-receive-email...

    1. Sign into AOL Mail on a web browser. 2. Compose an email and add your own email address in the "To" field. 3. Send the email and check if it arrives.

  5. Reauthenticate your AOL Mail account in third-party email ...

    help.aol.com/articles/reauthenticate-your-aol...

    If you're unable to reauthenticate your account by re-entering your AOL Mail password, you may need to re-add your AOL Mail account to the third-party email application. Please read our IMAP, POP and SMTP settings help article for server and port settings information and information on how to add an account to common third-party email applications.

  6. Download your email from AOL Mail with IMAP

    help.aol.com/articles/download-your-email-from...

    Outgoing Mail (SMTP) Server • Server - smtp.aol.com • Port - 465 • Requires SSL - Yes • Requires authentication - Yes. Your login info.

  7. Simple Mail Transfer Protocol - Wikipedia

    en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol

    The initiating host, the SMTP client, can be either an end-user's email client, functionally identified as a mail user agent (MUA), or a relay server's mail transfer agent (MTA), that is an SMTP server acting as an SMTP client, in the relevant session, in order to relay mail. Fully capable SMTP servers maintain queues of messages for retrying ...

  8. List of SMTP server return codes - Wikipedia

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

    This is a list of Simple Mail Transfer Protocol (SMTP) response status codes. Status codes are issued by a server in response to a client's request made to the server. Unless otherwise stated, all status codes described here is part of the current SMTP standard, RFC 5321. The message phrases shown are typical, but any human-readable alternative ...

  9. Fix problems with third-party mail applications - AOL Help

    help.aol.com/articles/why-cant-i-access-my-aol...

    If you recently changed your AOL password, you'll need to update it in the email client you use. Find your application's "Email Accounts" or "Account Settings" section, select your AOL Mail account, then update to your new password.