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  2. DMARC - Wikipedia

    en.wikipedia.org/wiki/DMARC

    Meanwhile, the existing DMARC specification had reached an editorial state agreed upon and implemented by many. It was published in March 2015 on the Independent Submission stream in the "Informational" (non-standard) category as RFC 7489. [35] In March 2017, the Federal Trade Commission published a study on DMARC usage by businesses. [36]

  3. DomainKeys Identified Mail - Wikipedia

    en.wikipedia.org/wiki/DomainKeys_Identified_Mail

    A CNAME record can also be used to point at a different TXT record, for example when one organization sends email on behalf of another. The receiver can use the public key (value of the p tag) to then validate the signature on the hash value in the header field, and check it against the hash value for the mail message (headers and body) that ...

  4. Sender Policy Framework - Wikipedia

    en.wikipedia.org/wiki/Sender_Policy_Framework

    Sender Policy Framework (SPF) is an email authentication method that 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.

  5. Brand Indicators for Message Identification - Wikipedia

    en.wikipedia.org/wiki/Brand_Indicators_for...

    To implement BIMI, companies need a valid DMARC DNS record with a policy of either quarantine or reject, an exact square logo for the brand in SVG Tiny P/S format, [3] and a DNS TXT record for the domain indicating the URI location of the SVG file. The only supported transport for the SVG URI is HTTPS. [1] The BIMI DNS record is in the ...

  6. Sender Rewriting Scheme - Wikipedia

    en.wikipedia.org/wiki/Sender_Rewriting_Scheme

    SRS is a form of variable envelope return path (VERP) inasmuch as it encodes the original envelope sender in the local part of the rewritten address. [2] Consider example.com forwarding a message originally destined to bob@example.com to his new address <bob@example.net>:

  7. 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.

  8. Authenticated Received Chain - Wikipedia

    en.wikipedia.org/wiki/Authenticated_Received_Chain

    However, a strict DMARC policy may block legitimate emails sent through a mailing list or forwarder, as the DKIM signature will be invalidated if the message is modified, such as by adding a subject tag or footer, and the SPF check will either fail (if the forwarder didn't change the bounce address) or be aligned with the mailing list domain ...

  9. Author Domain Signing Practices - Wikipedia

    en.wikipedia.org/wiki/Author_Domain_Signing...

    The ADSP specification explicitly discourages publishing a record different from "unknown" for domains who have independent users and a usage policy that does not explicitly restrict them to sending mail only from designated mail servers, since mail sent independently of the organization will not be signed. [3]