{"id":815,"date":"2024-06-27T10:17:05","date_gmt":"2024-06-27T10:17:05","guid":{"rendered":"https:\/\/serverspros.com\/?post_type=glossary&p=815"},"modified":"2024-06-27T10:17:05","modified_gmt":"2024-06-27T10:17:05","slug":"dmarc","status":"publish","type":"glossary","link":"https:\/\/serverspros.com\/en\/wiki\/dmarc\/","title":{"rendered":"DMARC"},"content":{"rendered":"

DMARC: Definition and Essential Function<\/p>\n

DMARC, an acronym for Domain-based Message Authentication, Reporting & Conformance, is an email authentication protocol designed to protect domains against unauthorized use, such as phishing and fraudulent email. DMARC allows domain owners to specify what actions email providers should take if a message fails the checks of SPF<\/a><\/span>Sun Protection Factor (SPF) is a measure of protection against the sun's UVB rays. It indicates how long a person can stay in the sun without burning compared to not using sunscreen. It is essential to choose an appropriate SPF based on skin type and expected sun exposure...<\/span><\/span><\/span> (Sender Policy Framework) and DKIM<\/a><\/span>DKIM (DomainKeys Identified Mail) is an email authentication protocol that allows receivers to verify that a message originates from the announced sender's domain. It uses cryptographic signatures to ensure that the content has not been altered. Implementing DKIM helps reduce spam and improves security...<\/span><\/span><\/span> (DomainKeys Identified Mail).<\/p>\n

The Importance of DMARC in Email Security<\/h2>\n

Implementing DMARC is vital for any organization looking to protect its brand and users from impersonation attacks. One of the biggest benefits of DMARC is its ability to prevent fraudulent emails from reaching end-users' inboxes. This is achieved through strict policies that can block or quarantine unauthenticated emails.<\/p>\n

How DMARC Works<\/h3>\n

DMARC works in conjunction with SPF and DKIM to provide an additional layer of security. Here is how:<\/p>\n

    \n
  1. \n

    SPF<\/strong>: This protocol allows domain owners to specify which servers are permitted to send mail on behalf of their domain. DMARC uses the results of SPF to determine if the email originates from an authorized source.<\/p>\n<\/li>\n

  2. \n

    DKIM<\/strong>: This protocol adds a digital signature to the email header. Receiving servers can verify this signature to ensure the email has not been altered and that it truly comes from the specified domain.<\/p>\n<\/li>\n<\/ol>\n

    DMARC takes the results from these two protocols and applies the policy defined by the domain owner. Policies can range from \"no action\" (monitoring only), \"quarantine\" (send to spam folder), to \"reject\" (completely block the email).<\/p>\n

    Benefits of Implementing DMARC<\/h3>\n
      \n
    1. \n

      Phishing Reduction<\/strong>: DMARC helps minimize phishing attacks by verifying email authenticity.<\/p>\n<\/li>\n

    2. \n

      Brand Protection<\/strong>: Companies can safeguard their reputation by ensuring only their legitimate emails reach recipients.<\/p>\n<\/li>\n

    3. \n

      Transparency and Reporting<\/strong>: DMARC provides detailed reports on emails that fail SPF and DKIM checks, allowing organizations to adjust their policies and improve security.<\/p>\n<\/li>\n

    4. \n

      Improved Deliverability<\/strong>: By establishing a DMARC policy, organizations can improve the delivery rate of their legitimate emails.<\/p>\n<\/li>\n<\/ol>\n

      How to Implement DMARC<\/h3>\n

      Implementing DMARC can be a technical process requiring careful planning. Here is a basic guide to get started:<\/p>\n

        \n
      1. \n

        Evaluate and Configure SPF and DKIM<\/strong>: Before implementing DMARC, ensure your SPF and DKIM records are correctly configured.<\/p>\n<\/li>\n

      2. \n

        Create a DMARC Record<\/strong>: This is added to the DNS<\/a><\/span>The Domain Name System (DNS) is essential for internet navigation, as it translates human-readable domain names, such as www.example.com, into numerical IP addresses. This allows users to access websites without needing to remember complex numerical sequences, facilitating connectivity and the management of...<\/span><\/span><\/span> of your domain and defines the policy you wish to apply. A basic DMARC record looks like this: <\/p>\n

        v=DMARC1; p=none; rua=mailto:reports@example.com; ruf=mailto:forensics@example.com<\/code><\/pre>\n
          \n
        • p<\/code>: Defines the policy (none, quarantine, reject).<\/li>\n
        • rua<\/code>: Email address for aggregate reports.<\/li>\n
        • ruf<\/code>: Email address for forensic reports.<\/li>\n<\/ul>\n<\/li>\n
        • \n
          Initial Monitoring<\/strong>: Start with a policy of p=none<\/code> to collect data without affecting email deliverability. This allows you to understand the landscape before applying stricter policies.<\/p>\n<\/li>\n
        • \n
          Analyze Reports<\/strong>: Use the provided reports to identify issues and adjust your SPF and DKIM configurations.<\/p>\n<\/li>\n
        • \n
          Adjust the Policy<\/strong>: Gradually adjust the policy to quarantine<\/code> o reject<\/code> as appropriate, to block unauthenticated mail.<\/p>\n<\/li>\n<\/ol>\n
          Tools and Resources<\/h3>\n
          There are several tools and services that can facilitate DMARC setup and implementation, such as:<\/p>\n
            \n
          • DMARC Analyzer<\/strong>: Offers detailed analysis and recommendations.<\/li>\n
          • MxToolbox<\/strong>: Provides record checks and diagnostics.<\/li>\n
          • Postmark<\/strong>: Helps manage email deliverability and authenticity.<\/li>\n<\/ul>\n
            Conclusion<\/h3>\n
            Implementing DMARC is a crucial step toward improving email security and protecting brand reputation. Although the process may seem complex, the long-term benefits make it worthwhile. From preventing phishing to improving deliverability, DMARC has become an indispensable tool in the digital age.<\/p>\n
            Therefore, it is important that all organizations, regardless of size, consider adopting DMARC as part of their email security strategy. With the right resources and tools, the path to successful DMARC implementation is within everyone's reach.<\/p>","protected":false},"excerpt":{"rendered":"
            DMARC (Domain-based Message Authentication, Reporting, and Conformance) is an email authentication protocol designed to protect domains against fraudulent emails. It works by verifying the sender's authenticity and reporting impersonation attempts. DMARC is essential for improving email security and preventing phishing attacks.<\/p>","protected":false},"author":1,"featured_media":911,"parent":0,"template":"","glossary-cat":[],"class_list":["post-815","glossary","type-glossary","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nDMARC - ServersPros<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/serverspros.com\/en\/wiki\/dmarc\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DMARC - ServersPros\" \/>\n<meta property=\"og:description\" content=\"DMARC (Domain-based Message Authentication, Reporting and Conformance) es un protocolo de autenticaci\u00f3n de correo electr\u00f3nico dise\u00f1ado para proteger a los dominios contra correos electr\u00f3nicos fraudulentos. Funciona verificando la autenticidad del remitente y reportando intentos de suplantaci\u00f3n de identidad. DMARC es esencial para mejorar la seguridad del correo electr\u00f3nico y prevenir ataques de phishing.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/serverspros.com\/en\/wiki\/dmarc\/\" \/>\n<meta property=\"og:site_name\" content=\"ServersPros\" \/>\n<meta property=\"og:image\" content=\"https:\/\/serverspros.com\/wp-content\/uploads\/2024\/06\/dmarc_815-4700061.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/serverspros.com\/wiki\/dmarc\/\",\"url\":\"https:\/\/serverspros.com\/wiki\/dmarc\/\",\"name\":\"DMARC - ServersPros\",\"isPartOf\":{\"@id\":\"https:\/\/serverspros.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/serverspros.com\/wiki\/dmarc\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/serverspros.com\/wiki\/dmarc\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/serverspros.com\/wp-content\/uploads\/2024\/06\/dmarc_815-4700061.jpg\",\"datePublished\":\"2024-06-27T10:17:05+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/serverspros.com\/wiki\/dmarc\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/serverspros.com\/wiki\/dmarc\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/serverspros.com\/wiki\/dmarc\/#primaryimage\",\"url\":\"https:\/\/serverspros.com\/wp-content\/uploads\/2024\/06\/dmarc_815-4700061.jpg\",\"contentUrl\":\"https:\/\/serverspros.com\/wp-content\/uploads\/2024\/06\/dmarc_815-4700061.jpg\",\"width\":800,\"height\":600,\"caption\":\"dmarc-2-1032078\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/serverspros.com\/wiki\/dmarc\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Portada\",\"item\":\"https:\/\/serverspros.com\/de\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Glossary\",\"item\":\"https:\/\/serverspros.com\/de\/wiki\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"DMARC\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/serverspros.com\/#website\",\"url\":\"https:\/\/serverspros.com\/\",\"name\":\"ServersPros\",\"description\":\"Tutoriales de servidores y VirtualMin\",\"publisher\":{\"@id\":\"https:\/\/serverspros.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/serverspros.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/serverspros.com\/#organization\",\"name\":\"serverspros\",\"url\":\"https:\/\/serverspros.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/serverspros.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/serverspros.com\/wp-content\/uploads\/2024\/06\/Systempeaker_logo_blanco-3193993.webp\",\"contentUrl\":\"https:\/\/serverspros.com\/wp-content\/uploads\/2024\/06\/Systempeaker_logo_blanco-3193993.webp\",\"width\":556,\"height\":114,\"caption\":\"serverspros\"},\"image\":{\"@id\":\"https:\/\/serverspros.com\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"DMARC - ServersPros","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/serverspros.com\/en\/wiki\/dmarc\/","og_locale":"en_US","og_type":"article","og_title":"DMARC - ServersPros","og_description":"DMARC (Domain-based Message Authentication, Reporting and Conformance) es un protocolo de autenticaci\u00f3n de correo electr\u00f3nico dise\u00f1ado para proteger a los dominios contra correos electr\u00f3nicos fraudulentos. Funciona verificando la autenticidad del remitente y reportando intentos de suplantaci\u00f3n de identidad. DMARC es esencial para mejorar la seguridad del correo electr\u00f3nico y prevenir ataques de phishing.","og_url":"https:\/\/serverspros.com\/en\/wiki\/dmarc\/","og_site_name":"ServersPros","og_image":[{"width":800,"height":600,"url":"https:\/\/serverspros.com\/wp-content\/uploads\/2024\/06\/dmarc_815-4700061.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/serverspros.com\/wiki\/dmarc\/","url":"https:\/\/serverspros.com\/wiki\/dmarc\/","name":"DMARC - ServersPros","isPartOf":{"@id":"https:\/\/serverspros.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/serverspros.com\/wiki\/dmarc\/#primaryimage"},"image":{"@id":"https:\/\/serverspros.com\/wiki\/dmarc\/#primaryimage"},"thumbnailUrl":"https:\/\/serverspros.com\/wp-content\/uploads\/2024\/06\/dmarc_815-4700061.jpg","datePublished":"2024-06-27T10:17:05+00:00","breadcrumb":{"@id":"https:\/\/serverspros.com\/wiki\/dmarc\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/serverspros.com\/wiki\/dmarc\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/serverspros.com\/wiki\/dmarc\/#primaryimage","url":"https:\/\/serverspros.com\/wp-content\/uploads\/2024\/06\/dmarc_815-4700061.jpg","contentUrl":"https:\/\/serverspros.com\/wp-content\/uploads\/2024\/06\/dmarc_815-4700061.jpg","width":800,"height":600,"caption":"dmarc-2-1032078"},{"@type":"BreadcrumbList","@id":"https:\/\/serverspros.com\/wiki\/dmarc\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Portada","item":"https:\/\/serverspros.com\/de\/"},{"@type":"ListItem","position":2,"name":"Glossary","item":"https:\/\/serverspros.com\/de\/wiki\/"},{"@type":"ListItem","position":3,"name":"DMARC"}]},{"@type":"WebSite","@id":"https:\/\/serverspros.com\/#website","url":"https:\/\/serverspros.com\/","name":"ServersPros","description":"Server and VirtualMin Tutorials","publisher":{"@id":"https:\/\/serverspros.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/serverspros.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/serverspros.com\/#organization","name":"serverspros","url":"https:\/\/serverspros.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/serverspros.com\/#\/schema\/logo\/image\/","url":"https:\/\/serverspros.com\/wp-content\/uploads\/2024\/06\/Systempeaker_logo_blanco-3193993.webp","contentUrl":"https:\/\/serverspros.com\/wp-content\/uploads\/2024\/06\/Systempeaker_logo_blanco-3193993.webp","width":556,"height":114,"caption":"serverspros"},"image":{"@id":"https:\/\/serverspros.com\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/serverspros.com\/en\/wp-json\/wp\/v2\/glossary\/815","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/serverspros.com\/en\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/serverspros.com\/en\/wp-json\/wp\/v2\/types\/glossary"}],"author":[{"embeddable":true,"href":"https:\/\/serverspros.com\/en\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":1,"href":"https:\/\/serverspros.com\/en\/wp-json\/wp\/v2\/glossary\/815\/revisions"}],"predecessor-version":[{"id":912,"href":"https:\/\/serverspros.com\/en\/wp-json\/wp\/v2\/glossary\/815\/revisions\/912"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/serverspros.com\/en\/wp-json\/wp\/v2\/media\/911"}],"wp:attachment":[{"href":"https:\/\/serverspros.com\/en\/wp-json\/wp\/v2\/media?parent=815"}],"wp:term":[{"taxonomy":"glossary-cat","embeddable":true,"href":"https:\/\/serverspros.com\/en\/wp-json\/wp\/v2\/glossary-cat?post=815"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}