{"id":18997,"date":"2026-09-08T23:25:40","date_gmt":"2026-09-08T23:25:40","guid":{"rendered":"https:\/\/www.mailgun.com\/glossary\/protocolos-de-autenticacao\/"},"modified":"2026-09-08T23:25:40","modified_gmt":"2026-09-08T23:25:40","slug":"protocolos-de-autenticacao","status":"publish","type":"glossary","link":"https:\/\/www.mailgun.com\/pt\/glossary\/protocolos-de-autenticacao\/","title":{"rendered":"Protocolos de autentica\u00e7\u00e3o"},"content":{"rendered":"<h1>Protocolos de autentica\u00e7\u00e3o<\/h1>\n<p><span data-contrast=\"none\">Os protocolos de autentica\u00e7\u00e3o de e-mail s\u00e3o padr\u00f5es que verificam se um e-mail foi realmente enviado pelo dom\u00ednio que afirma ser o remetente.<\/span><span data-contrast=\"none\"> Esses protocolos ajudam a evitar spoofing, phis<\/span><span data-contrast=\"none\">h<\/span><span data-contrast=\"none\">ing e envios n\u00e3o autorizados, sendo essenciais para <\/span><span data-contrast=\"none\">estabelecer<\/span><span data-contrast=\"none\"> a confian\u00e7a com <\/span><span data-contrast=\"none\">os provedores de servi\u00e7os de caixa de entrada (ISPs).<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">Os tr\u00eas protocolos principais s\u00e3o:<\/span><span data-ccp-props=\"{\"> <\/span><\/p>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"40\" data-list-defn-props=\"{\" data-aria-posinset=\"1\" data-aria-level=\"1\"><a href=\"https:\/\/www.mailgun.com\/blog\/deliverability\/spf-records-basics\/?utm_source=google&#038;utm_medium=cpc&#038;utm_campaign=NA%20%7C%20Brand&#038;utm_id=750089235&#038;utm_content=44926653532&#038;utm_term=mailgun%20transactional%20email&#038;gad_source=1&#038;gad_campaignid=750089235&#038;gbraid=0AAAAAofVncceW_Nvx3-twdaDpiReB3GU6&#038;gclid=EAIaIQobChMIyOben_nJkQMVuzYIBR2llSRdEAAYASAAEgJ4evD_BwE\"><b><span data-contrast=\"none\">SPF (Sender Policy Framework):<\/span><\/b><\/a><span data-contrast=\"none\"> Confirma que o IP de envio <\/span><span data-contrast=\"none\">est\u00e1 autorizad<\/span><span data-contrast=\"none\">o a<\/span><span data-contrast=\"none\"> enviar e-mails <\/span><span data-contrast=\"none\">pelo<\/span><span data-contrast=\"none\"> dom\u00ednio.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"40\" data-list-defn-props=\"{\" data-aria-posinset=\"1\" data-aria-level=\"1\"><a href=\"https:\/\/www.mailgun.com\/blog\/deliverability\/understanding-dkim-how-it-works\/\"><b><span data-contrast=\"none\">DKIM (DomainKeys Identified Mail):<\/span><\/b><\/a><b><span data-contrast=\"none\"> <\/span><\/b><span data-contrast=\"none\">Usa um par de chaves p\u00fablica e privada para assinar mensagens criptograficamente em nome do dom\u00ednio do remetente.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"40\" data-list-defn-props=\"{\" data-aria-posinset=\"1\" data-aria-level=\"1\"><a href=\"https:\/\/www.mailgun.com\/blog\/deliverability\/implement-dmarc\/\"><b><span data-contrast=\"none\">DMARC (Domain-based Message Authentication, Reporting &amp; C<\/span><\/b><b><span data-contrast=\"none\">onformance):<\/span><\/b><\/a><b><span data-contrast=\"none\"> <\/span><\/b><span data-contrast=\"none\">Baseia-se no<\/span><span data-contrast=\"none\"> SPF e DKIM para fornecer aplica\u00e7\u00e3o de pol\u00edticas e relat\u00f3rios. Ele informa aos <\/span><span data-contrast=\"none\">servidores<\/span><span data-contrast=\"none\"> de recebimento o que fazer quando a autentica\u00e7\u00e3o falhar.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<\/ul>\n<p><b><span data-contrast=\"none\">Por que isso<\/span><\/b><b><span data-contrast=\"none\"> \u00e9 importante: <\/span><\/b><span data-ccp-props=\"{\"> <\/span><\/p>\n<p><span data-contrast=\"none\">Sem a autentica\u00e7\u00e3o adequada, suas mensagens t\u00eam mais probabilidade de serem rejeitadas, <\/span><span data-contrast=\"none\">enviadas para<\/span><span data-contrast=\"none\"> o spam ou sinaliz<\/span><span data-contrast=\"none\">adas como <\/span><span data-contrast=\"none\">suspeitas<\/span><span data-contrast=\"none\">, n\u00e3o importa o qu\u00e3o limpo seja o seu conte\u00fado.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\"><strong>Aviso:<\/strong> a autentica\u00e7\u00e3o n\u00e3o <\/span><span data-contrast=\"none\">\u00e9<\/span><span data-contrast=\"none\"> mais opcional. Os principais provedores de caixa de correio<\/span><span data-contrast=\"none\">, como Gmail e Microsoft, exigem cada vez mais o alinhamento com SPF, DKIM e DMARC para uma entrega consistente na caixa de entrada.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Protocolos de autentica\u00e7\u00e3o Os protocolos de autentica\u00e7\u00e3o de e-mail s\u00e3o padr\u00f5es que verificam se um e-mail foi realmente enviado pelo dom\u00ednio que afirma ser o remetente. Esses protocolos ajudam a evitar spoofing, phishing e envios n\u00e3o autorizados, sendo essenciais para estabelecer a confian\u00e7a com os provedores de servi\u00e7os de caixa de entrada (ISPs).\u00a0 Os tr\u00eas [&hellip;]<\/p>\n","protected":false},"author":23,"template":"","meta":{"_acf_changed":false},"class_list":["post-18997","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Protocolos de autentica\u00e7\u00e3o \u2013 Gloss\u00e1rio de termos de e-mail | Mailgun<\/title>\n<meta name=\"description\" content=\"Protocolos de autentica\u00e7\u00e3o como SPF, DKIM e DMARC s\u00e3o registros que as marcas configuram para proteger o envio de e-mails. 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