{"id":3800,"date":"2026-07-22T16:16:08","date_gmt":"2026-07-22T16:16:08","guid":{"rendered":"https:\/\/disoh.com\/support\/what-is-dmarc-and-why-your-domain-needs-it\/"},"modified":"2026-07-22T16:16:08","modified_gmt":"2026-07-22T16:16:08","password":"","slug":"o-que-e-o-dmarc-e-por-que-seu-dominio-precisa-dele","status":"publish","type":"docs","link":"https:\/\/disoh.com\/pt\/support\/what-is-dmarc-and-why-your-domain-needs-it\/","title":{"rendered":"O que \u00e9 o DMARC e por que seu dom\u00ednio precisa dele"},"content":{"rendered":"<p>O DMARC (Domain-based Message Authentication, Reporting and Conformance) \u00e9 uma pol\u00edtica de e-mail que se baseia no SPF e no DKIM para indicar aos servidores receptores o que fazer com as mensagens que n\u00e3o passam na autentica\u00e7\u00e3o. Em termos simples, o SPF e o DKIM comprovam que seu e-mail \u00e9 genu\u00edno, e o DMARC decide o que acontece com os e-mails que se passam por voc\u00ea. Configur\u00e1-lo protege sua marca e aumenta a chance de seus e-mails verdadeiros chegarem \u00e0 caixa de entrada.<\/p>\n<h2>Por que o DMARC \u00e9 importante<\/h2>\n<p>Sem o DMARC, mesmo que voc\u00ea tenha o SPF e o DKIM, os servidores receptores n\u00e3o t\u00eam instru\u00e7\u00f5es sobre como lidar com mensagens falsificadas e cada um decide por conta pr\u00f3pria. O DMARC preenche essa lacuna. Ele tamb\u00e9m envia relat\u00f3rios mostrando quem est\u00e1 enviando e-mails usando o seu dom\u00ednio, o que \u00e9 inestim\u00e1vel para detectar abusos. Os principais benef\u00edcios s\u00e3o:<\/p>\n<ul>\n<li><strong>Prote\u00e7\u00e3o contra falsifica\u00e7\u00e3o de identidade:<\/strong> impede que criminosos se fa\u00e7am passar pelo seu dom\u00ednio de forma convincente.<\/li>\n<li><strong>Capacidade de entrega:<\/strong> Uma pol\u00edtica clara e coerente gera confian\u00e7a junto aos provedores de e-mail.<\/li>\n<li><strong>Visibilidade:<\/strong> Os relat\u00f3rios revelam todas as fontes que enviam mensagens em nome do seu dom\u00ednio.<\/li>\n<\/ul>\n<h2>Como funciona o DMARC<\/h2>\n<p>O DMARC \u00e9 publicado como um registro TXT em um nome de host espec\u00edfico, <em>_dmarc.seudominio.com<\/em>. Ele define uma pol\u00edtica e indica para onde enviar os relat\u00f3rios. A pol\u00edtica pode se enquadrar em um dos tr\u00eas n\u00edveis, e \u00e9 recomend\u00e1vel avan\u00e7ar por eles gradualmente, \u00e0 medida que voc\u00ea vai ganhando confian\u00e7a.<\/p>\n<ul>\n<li><strong>p=nenhum:<\/strong> Apenas monitore; n\u00e3o tome nenhuma medida. Comece por aqui para coletar relat\u00f3rios.<\/li>\n<li><strong>p = quarentena:<\/strong> enviar e-mails com falha para a pasta de spam.<\/li>\n<li><strong>p = rejeitar:<\/strong> bloquear imediatamente os e-mails com falha. A prote\u00e7\u00e3o mais eficaz.<\/li>\n<\/ul>\n<h2>Como configurar o DMARC<\/h2>\n<ul>\n<li>Primeiro, certifique-se de que o SPF e o DKIM j\u00e1 estejam configurados e sejam aprovados.<\/li>\n<li>Fa\u00e7a login no seu gerenciador de DNS ou no seu painel de controle.<\/li>\n<li>Criar um <strong>TXT<\/strong> registrar junto ao anfitri\u00e3o <em>_dmarc<\/em>.<\/li>\n<li>Insira um valor inicial, como, por exemplo, <em>v=DMARC1; p=none; rua=mailto:you@yourdomain.com<\/em>.<\/li>\n<li>Salve e aguarde o tempo necess\u00e1rio para a propaga\u00e7\u00e3o.<\/li>\n<\/ul>\n<p>Comece com <em>p=nenhum<\/em>, analise os relat\u00f3rios por algumas semanas para confirmar se todos os seus remetentes leg\u00edtimos s\u00e3o aprovados e, em seguida, torne a pol\u00edtica mais rigorosa para colocar em quarentena e, eventualmente, rejeitar.<\/p>\n<h2>Lendo os relat\u00f3rios<\/h2>\n<p>O <em>rua<\/em> O endere\u00e7o recebe relat\u00f3rios agregados di\u00e1rios em XML. Como esses relat\u00f3rios podem ser dif\u00edceis de ler manualmente, muitas pessoas utilizam um visualizador gratuito de relat\u00f3rios DMARC para interpret\u00e1-los. O objetivo \u00e9 confirmar se todas as fontes que enviam mensagens em seu nome est\u00e3o autenticadas antes de voc\u00ea aplicar uma pol\u00edtica mais rigorosa.<\/p>\n<h2>Solu\u00e7\u00e3o de problemas<\/h2>\n<ul>\n<li><strong>E-mails leg\u00edtimos sendo colocados em quarentena:<\/strong> Volte para p=none e verifique se o SPF e o DKIM est\u00e3o v\u00e1lidos para esse remetente.<\/li>\n<li><strong>N\u00e3o h\u00e1 relat\u00f3rios chegando:<\/strong> Verifique se o endere\u00e7o da Rua \u00e9 v\u00e1lido e se os dados est\u00e3o corretos.<\/li>\n<li><strong>Registro n\u00e3o reconhecido:<\/strong> confirme se o host \u00e9 exatamente _dmarc.<\/li>\n<\/ul>\n<h2>Precisa de ajuda?<\/h2>\n<p>O DMARC recomenda uma implementa\u00e7\u00e3o cuidadosa e em etapas. Se voc\u00ea precisar de ajuda para interpretar os relat\u00f3rios ou escolher uma pol\u00edtica, nossa equipe de suporte est\u00e1 \u00e0 disposi\u00e7\u00e3o no chat ao vivo.<\/p>","protected":false},"excerpt":{"rendered":"<p>DMARC (Domain-based Message Authentication, Reporting and Conformance) is an email policy that builds on SPF and DKIM to tell receiving servers what to do with messages that fail authentication. In simple terms, SPF and DKIM prove your mail is genuine, and DMARC decides what happens to mail that pretends to be you. Setting it up [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"doc_category":[13],"doc_tag":[],"class_list":["post-3800","docs","type-docs","status-publish","hentry","doc_category-domains"],"year_month":"2026-10","word_count":432,"total_views":"175","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"Jorn","author_nicename":"jorn","author_url":"https:\/\/disoh.com\/pt\/author\/jorn\/"},"doc_category_info":[{"term_name":"Domains","term_url":"https:\/\/disoh.com\/pt\/docs-category\/domains\/"}],"doc_tag_info":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is DMARC and Why Your Domain Needs It &#8211; Disoh<\/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:\/\/disoh.com\/pt\/suporte\/o-que-e-o-dmarc-e-por-que-seu-dominio-precisa-dele\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is DMARC and Why Your Domain Needs It &#8211; Disoh\" \/>\n<meta property=\"og:description\" content=\"DMARC (Domain-based Message Authentication, Reporting and Conformance) is an email policy that builds on SPF and DKIM to tell receiving servers what to do with messages that fail authentication. 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