{"id":6932,"date":"2021-03-22T10:35:36","date_gmt":"2021-03-22T10:35:36","guid":{"rendered":"https:\/\/198.27.90.141\/?p=6932"},"modified":"2026-09-29T18:36:36","modified_gmt":"2026-09-29T18:36:36","slug":"o-que-e-dmarc","status":"publish","type":"post","link":"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-dmarc\/","title":{"rendered":"O que \u00e9 DMARC (Domain-based Message Authentication Reporting &#038; Conformance)?"},"content":{"rendered":"<p>O DMARC (Domain-based Message Authentication Reporting &amp; Conformance) refor\u00e7a a seguran\u00e7a e a prote\u00e7\u00e3o do e-mail da sua empresa. Ele \u00e9 um mecanismo de autentica\u00e7\u00e3o de e-mail, um conjunto de pol\u00edticas e regras que usa o\u00a0<a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-spf-sender-policy-framework\/\" target=\"_blank\" rel=\"noopener\">SPF (Sender Policy Framework)<\/a>\u00a0e o\u00a0<a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-dkim-domainkeys-identified-mail\/\" target=\"_blank\" rel=\"noopener\">DKIM (DomainKeys Identified Mail)<\/a>\u00a0para detectar e evitar fraudes.<\/p>\n<p>O DMARC padroniza a maneira como os e-mails s\u00e3o verificados pelos servidores. Isto significa mais prote\u00e7\u00e3o contra ataques de spam e de phishing.<\/p>\n<h2>DMARC \u00e9 uma solu\u00e7\u00e3o para evitar fraudes de e-mail<\/h2>\n<p>Ao utilizar mecanismos de autentica\u00e7\u00e3o, o DMARC acaba desempenhando um\u00a0papel importante de definir se um e-mail \u00e9 leg\u00edtimo ou falso. Al\u00e9m disso, ele\u00a0determina\u00a0o que deve ser feito com um e-mail, se deve ser entregue ou n\u00e3o.<\/p>\n<h2>Como funciona o DMARC<\/h2>\n<p>O DMARC funciona alertando os\u00a0<a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-servidor-de-email-mail-server\/\" target=\"_blank\" rel=\"noopener\">servidores de e-mails<\/a>\u00a0de que as mensagens do remetente s\u00e3o protegidas por SPF e\/ou DKIM e que, se um destes\u00a0<a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-sao-rua-e-ruf-dmarc\/\" target=\"_blank\" rel=\"noopener\">protocolos de autentica\u00e7\u00e3o<\/a>\u00a0falhar, uma a\u00e7\u00e3o deve ser tomada, como, por exemplo, rejeitar o e-mail. O DMARC tamb\u00e9m permite que os remetentes recebam relat\u00f3rios sobre mensagens que foram entregues e\/ou falharam.<\/p>\n<h2>Por que voc\u00ea deveria usar o DMARC<\/h2>\n<p>Voc\u00ea deveria usar o DMARC para bloquear\u00a0<a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-spoofing-de-e-mail\/\" target=\"_blank\" rel=\"noopener\">spoofing de e-mail<\/a>,\u00a0<a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-phishing\/\" target=\"_blank\" rel=\"noopener\">phishing\u00a0<\/a>e\u00a0<a href=\"https:\/\/gatefy.com\/pt-br\/blog\/como-o-antispam-protege-sua-empresa\/\" target=\"_blank\" rel=\"noopener\">spam<\/a>. Em outras palavras, para evitar que criminosos usem o nome e a marca da sua empresa para cometer golpes e fraudes.<\/p>\n<p>Confira o que diz a dmarc.org sobre a raz\u00e3o pela qual o DMARC \u00e9 t\u00e3o importante:<\/p>\n<p>\u201cOs usu\u00e1rios n\u00e3o conseguem diferenciar uma mensagem verdadeira de uma mensagem fake, e os grandes provedores de e-mails precisam fazer escolhas muito dif\u00edceis (e frequentemente incorretas) sobre quais mensagens entregar e quais podem prejudicar os usu\u00e1rios. Os remetentes permanecem desconhecendo os problemas de autentica\u00e7\u00e3o que acontecem porque n\u00e3o h\u00e1 uma maneira escal\u00e1vel deles indicarem que desejam feedback e para onde\u00a0esse feedback deve\u00a0ser enviado.<\/p>\n<p>Aqueles que tentam novas implanta\u00e7\u00f5es de SPF e de DKIM caminham lentamente e com cautela porque a falta de feedback tamb\u00e9m significa que eles n\u00e3o t\u00eam um\u00a0bom\u00a0modo de monitorar os avan\u00e7os e de acabar com os problemas. O DMARC trata disso tudo, ajudando remetentes e destinat\u00e1rios a trabalharem juntos para proteger melhor os e-mails, protegendo usu\u00e1rios e marcas contra\u00a0<a href=\"https:\/\/gatefy.com\/pt-br\/blog\/bec-phishing-continuam-moda-diz-relatorio-fbi\/\" target=\"_blank\" rel=\"noopener\">abusos dolorosamente caros<\/a>\u201d.<\/p>\n<h2>Desafios do DMARC<\/h2>\n<p>Antes de escolher implantar o DMARC, voc\u00ea deve saber que:<\/p>\n<ul>\n<li>O DMARC protege a sua empresa contra o spoofing direto de dom\u00ednio.<\/li>\n<li>Ele n\u00e3o garante prote\u00e7\u00e3o contra spoofing do nome de exibi\u00e7\u00e3o e de dom\u00ednios semelhantes, tamb\u00e9m chamados de dom\u00ednios primos.<\/li>\n<li>Como o DKIM, ele tem uma implanta\u00e7\u00e3o complexa.<\/li>\n<\/ul>\n<h2>DMARC, DKIM e SPF<\/h2>\n<p>Sim, \u00e9 fundamental ter esses tr\u00eas mecanismos configurados: DMARC, DKIM e SPF. Eles trabalham em equipe, aumentando a sua seguran\u00e7a de e-mail. Pense que \u00e9 melhor se defender tendo tr\u00eas barreiras de prote\u00e7\u00e3o do que apenas uma ou duas. Como costumamos dizer aqui na Gatefy, quanto mais prote\u00e7\u00f5es a sua empresa tiver, melhor.<\/p>\n<p><a href=\"https:\/\/gatefy.com\/pt-br\/blog\/webinar-seguranca-email-empresa-dmarc-spf-dkim\/\" target=\"_blank\" rel=\"noopener\">Clique aqui para assistir ao webinar da Gatefy sobre \u201cSeguran\u00e7a de e-mail para empresas com DMARC, SPF e DKIM\u201d.<\/a><\/p>\n<h2>Mais informa\u00e7\u00f5es sobre o DMARC<\/h2>\n<section>\n<section>\n<p>Por favor, visite\u00a0<a href=\"http:\/\/www.dmarc.org\/\" target=\"_blank\" rel=\"noopener\">www.dmarc.org<\/a>.<\/p>\n<\/section>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>O DMARC (Domain-based Message Authentication Reporting &amp; Conformance) refor\u00e7a a seguran\u00e7a e a prote\u00e7\u00e3o do e-mail da sua empresa. Ele \u00e9 um mecanismo de autentica\u00e7\u00e3o de e-mail, um conjunto de pol\u00edticas e regras que usa o\u00a0SPF (Sender Policy Framework)\u00a0e o\u00a0DKIM (DomainKeys Identified Mail)\u00a0para detectar e evitar fraudes. O DMARC padroniza a maneira como os e-mails [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":6933,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,37],"tags":[],"class_list":["post-6932","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-educacao"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>DMARC: o que \u00e9, como funciona e por que voc\u00ea deve usar - Gatefy<\/title>\n<meta name=\"description\" content=\"DMARC (Domain-based Message Authentication Reporting &amp; Conformance) melhora a seguran\u00e7a e prote\u00e7\u00e3o do seu e-mail!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-dmarc\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DMARC: o que \u00e9, como funciona e por que voc\u00ea deve usar - Gatefy\" \/>\n<meta property=\"og:description\" content=\"DMARC (Domain-based Message Authentication Reporting &amp; 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