{"id":8794,"date":"2021-01-12T13:57:26","date_gmt":"2021-01-12T13:57:26","guid":{"rendered":"https:\/\/kb.mailfence.com\/kb\/como-configurar-la-defensa-antispoofing-para-mi-dominio\/"},"modified":"2025-02-03T09:14:29","modified_gmt":"2025-02-03T09:14:29","slug":"como-configurar-la-defensa-antispoofing-para-mi-dominio","status":"publish","type":"ht_kb","link":"https:\/\/kb.mailfence.com\/es\/kb\/como-configurar-la-defensa-antispoofing-para-mi-dominio\/","title":{"rendered":"Defensa contra el spoofing: \u00bfc\u00f3mo configurarlo para su dominio?"},"content":{"rendered":"\n<h1 class=\"wp-block-heading has-text-align-center\" id=\"h-obligatorio\">Obligatorio<\/h1>\n\n\n\n<p>Para crear una defensa contra el spoofing, no necesitas realizar ninguna modificaci\u00f3n si s\u00f3lo utilizas direcciones basadas en el nombre de dominio mailfence.com. Sin embargo, si has <a href=\"https:\/\/blog.mailfence.com\/es\/spf-dkim-y-dmarc-defensa-contra-la-suplantacion-spoofing-en-dominios-personalizados\/\">a\u00f1adido tu propio nombre de dominio<\/a>, debes configurar las siguientes entradas DNS para evitar <a href=\"https:\/\/blog.mailfence.com\/spoofing-defense-spf-dkim-dmarc\/\">la suplantaci\u00f3n del correo electr\u00f3nico<\/a> y garantizar la entregabilidad:<\/p>\n\n\n\n<div class=\"wp-block-ht-block-toc  is-style-outline htoc htoc--position-wide toc-list-style-plain\" data-htoc-state=\"expanded\"><span class=\"htoc__title\"><span class=\"ht_toc_title\">\u00cdndice<\/span><span class=\"htoc__toggle\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\"><g fill=\"#444\"><path d=\"M15 7H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1z\"><\/path><path d=\"M15 1H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1zM15 13H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1z\"><\/path><\/g><\/svg><\/span><\/span><div class=\"htoc__itemswrap\"><ul class=\"ht_toc_list\"><li class=\"\"><a href=\"#h-marco-de-politica-de-remitentes-spf\">Marco de Pol\u00edtica de Remitentes (SPF):<\/a><\/li><li class=\"\"><a href=\"#h-correo-identificado-por-claves-de-dominio-dkim\">Correo Identificado por Claves de Dominio (DKIM)<\/a><\/li><li class=\"\"><a href=\"#h-autenticacion-notificacion-y-conformidad-de-mensajes-basados-en-dominios-dmarc\">Autenticaci\u00f3n, notificaci\u00f3n y conformidad de mensajes basados en dominios (DMARC)<\/a><\/li><li class=\"\"><a href=\"#h-agente-de-transferencia-de-correo-seguridad-estricta-de-transporte-mta-sts\">Agente de transferencia de correo-Seguridad estricta de transporte (MTA-STS)<\/a><\/li><\/ul><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-marco-de-politica-de-remitentes-spf\">Marco de Pol\u00edtica de Remitentes (SPF):<\/h2>\n\n\n\n<p>1. Ve a tu cuenta <strong>Configuraci\u00f3n <strong>\u2192<\/strong> Mensajes <strong>\u2192<\/strong> Dominios de correo electr\u00f3nico<\/strong>.<\/p>\n\n\n\n<p>2. En <strong>la entrada de<\/strong> tu <strong>nombre de dominio<\/strong>, haz clic en <strong>SPF<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"976\" height=\"256\" src=\"https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-3.png\" alt=\"defensa contra la suplantaci\u00f3n de identidad - SPF\" class=\"wp-image-4234\" srcset=\"https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-3.png 976w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-3-300x79.png 300w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-3-768x201.png 768w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-3-50x13.png 50w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-3-60x16.png 60w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-3-100x26.png 100w\" sizes=\"auto, (max-width: 976px) 100vw, 976px\" \/><figcaption class=\"wp-element-caption\"><strong>Copia<\/strong> el valor del registro SPF para a\u00f1adirlo a tu nombre de dominio, alojamiento o proveedor de servicios DNS.<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-ht-blocks-messages wp-block-hb-message wp-block-hb-message--withicon is-style-info\">Un registro TXT es un tipo de <a href=\"https:\/\/es.wikipedia.org\/wiki\/Sistema_de_nombres_de_dominio\">registro de recursos<\/a> en el Sistema de Nombres de Dominio (DNS). Lee m\u00e1s <a href=\"https:\/\/es.wikipedia.org\/wiki\/Registro_TXT\">aqu\u00ed<\/a>. <strong>Consulta la documentaci\u00f3n de tu proveedor de servicios de nombres de dominio para obtener los pasos exactos sobre c\u00f3mo a\u00f1adir un registro TXT.<\/strong> <\/p>\n\n\n\n<p class=\"wp-block-ht-blocks-messages wp-block-hb-message wp-block-hb-message--withicon is-style-info\">Los registros DNS pueden tardar alg\u00fan tiempo en propagarse. Puedes utilizar <a href=\"https:\/\/www.whatsmydns.net\/\">esta herramienta<\/a> para comprobarlo. <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-si-los-correos-electr-nicos-s-lo-se-enviar-n-utilizando-los-servidores-de-mailfence-com-webmail-smtpauth-activesync-reenv-o-utiliza-el-siguiente-valor-v-spf1-include-spf-mailfence-com-all\">Si los correos electr\u00f3nicos s\u00f3lo se enviar\u00e1n utilizando los servidores de mailfence.com (webmail, SMTPAuth, ActiveSync, reenv\u00edo), utiliza el siguiente valor:<br>v=spf1 include:_spf.mailfence.com <strong>-all<\/strong><\/li>\n\n\n\n<li id=\"htoc-si-tambi-n-se-van-a-enviar-correos-electr-nicos-desde-otros-servidores-utiliza-el-siguiente-valor-v-spf1-include-spf-mailfence-com-all\">Si tambi\u00e9n se van a enviar correos electr\u00f3nicos desde otros servidores, utiliza el siguiente valor:<br>v=spf1 include:_spf.mailfence.com <strong>~all<\/strong><\/li>\n<\/ul>\n\n\n\n<p>3. Una vez incluido correctamente el registro DNS TXT correspondiente, pulsa en <strong>Verificar<\/strong>.<\/p>\n\n\n\n<p>Nota: En caso de que planees<a href=\"https:\/\/es.wikipedia.org\/wiki\/Sender_Policy_Framework\">\u00abincluir\u00bb<\/a> varias entradas de registros SPF para seguir autenticando los correos electr\u00f3nicos enviados desde otros proveedores, ten en cuenta el <a href=\"https:\/\/tools.ietf.org\/html\/rfc7208#section-4.6.4\">l\u00edmite de 10 b\u00fasquedas SPF<\/a>, que puede hacer que falle la autenticaci\u00f3n SPF en el lado receptor. Puedes aplanar autom\u00e1ticamente tus registros SPF utilizando cualquier servicio externo de tu elecci\u00f3n, por ejemplo, <a href=\"https:\/\/autospf.com\/\">autospf.com<\/a> (viene con un plan gratuito), etc.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-correo-identificado-por-claves-de-dominio-dkim\"><strong>Correo Identificado por Claves de Dominio (DKIM)<\/strong><\/h2>\n\n\n\n<p>1. Puedes continuar en el asistente anterior pulsando <strong>Siguiente<\/strong>, O si lo haces en otro momento:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li id=\"htoc-ve-a-tu-cuenta-configuraci-n-mensajes-dominios-de-correo-electr-nico\">Ve a tu cuenta <strong>Configuraci\u00f3n <strong>\u2192<\/strong> Mensajes <strong>\u2192<\/strong> Dominios de correo electr\u00f3nico<\/strong>.<\/li>\n\n\n\n<li id=\"htoc-en-la-entrada-de-tu-nombre-de-dominio-haz-clic-en-dkim\">En <strong>la entrada de<\/strong> tu <strong>nombre de dominio<\/strong>, haz clic en <strong>DKIM<\/strong>.<\/li>\n<\/ol>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"976\" height=\"349\" src=\"https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-4.png\" alt=\"defensa contra la suplantaci\u00f3n de identidad - DKIM\" class=\"wp-image-4235\" srcset=\"https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-4.png 976w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-4-300x107.png 300w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-4-768x275.png 768w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-4-50x18.png 50w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-4-60x21.png 60w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-4-100x36.png 100w\" sizes=\"auto, (max-width: 976px) 100vw, 976px\" \/><figcaption class=\"wp-element-caption\"><strong>Copia<\/strong> los valores de Nombre\/Host DKIM y de registro para a\u00f1adirlos en tu nombre de dominio, hosting o proveedor de servicios DNS.<\/figcaption><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-se-recomienda-utilizar-un-par-de-claves-dkim-de-2048-bits-en-caso-de-que-tu-nombre-de-dominio-alojamiento-o-proveedor-de-servicios-dns-no-admita-valores-dns-txt-largos-haz-clic-en-generar-una-clave-de-1024-bits\"><strong>Se recomienda utilizar un par de claves DKIM de 2048 bits<\/strong>.\nEn caso de que tu nombre de dominio\/alojamiento o proveedor de servicios DNS no admita valores DNS TXT largos, haz clic en \u00abgenerar una clave de 1024 bits\u00bb. <\/li>\n\n\n\n<li id=\"htoc-para-cambiar-o-rotar-tu-par-de-claves-dkim-consulta-este-art-culo-de-kb\">Para cambiar (o rotar) tu par de claves DKIM, consulta <a href=\"https:\/\/kb.mailfence.com\/es\/?post_type=ht_kb&amp;p=6335\">este art\u00edculo de KB<\/a>.<\/li>\n<\/ul>\n\n\n\n<p>3. Una vez incluido correctamente el registro DNS TXT correspondiente, pulsa en <strong>Verificar<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-ht-blocks-messages wp-block-hb-message wp-block-hb-message--withicon is-style-info\">Los registros DNS pueden tardar alg\u00fan tiempo en propagarse. Puedes utilizar <a href=\"https:\/\/www.whatsmydns.net\/\">esta herramienta<\/a> para comprobarlo. <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Si una herramienta externa verifica la existencia de tu clave DKIM pero la validaci\u00f3n sigue fallando en Mailfence, <em>configura <a href=\"https:\/\/tools.ietf.org\/html\/draft-allman-dkim-ssp-02\">la pol\u00edtica de firma DKIM<\/a><\/em> creando el siguiente <strong>registro DNS TXT<\/strong>:<br>Nombre\/Host: <strong>_domainkey<\/strong><br>Valor: <strong>o=~<\/strong>\n<ul class=\"wp-block-list\">\n<li id=\"htoc-o-se-refiere-a-que-algunos-pero-no-todos-los-correos-de-este-dominio-est-n-firmados\">o=~\u00bb se refiere a que \u00abalgunos, pero no todos los correos de este dominio est\u00e1n firmados\u00bb.<\/li>\n\n\n\n<li id=\"htoc-o-se-refiere-a-todos-los-correos-electr-nicos-de-este-dominio-est-n-firmados\">o=-\u00bb se refiere a \u00abtodos los correos electr\u00f3nicos de este dominio est\u00e1n firmados\u00bb.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li id=\"htoc-los-correos-electr-nicos-s-lo-se-firmar-n-dkim-despu-s-de-que-se-haya-validado-el-registro-dkim-correspondiente\">Los correos electr\u00f3nicos s\u00f3lo se firmar\u00e1n DKIM despu\u00e9s de que se haya validado el registro DKIM correspondiente.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator aligncenter has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading has-text-align-center\" id=\"h-opcional\">Opcional<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-autenticacion-notificacion-y-conformidad-de-mensajes-basados-en-dominios-dmarc\"><strong>Autenticaci\u00f3n, notificaci\u00f3n y conformidad de mensajes basados en dominios (DMARC)<\/strong><\/h2>\n\n\n\n<p>1. Puedes continuar en el asistente anterior pulsando <strong>Siguiente<\/strong>, O si lo haces en otro momento:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li id=\"htoc-ve-a-tu-cuenta-configuraci-n-mensajes-dominios-de-correo-electr-nico1\">Ve a tu cuenta <strong>Configuraci\u00f3n <strong>\u2192<\/strong> Mensajes \u2192 Dominios de correo electr\u00f3nico<\/strong>.<\/li>\n\n\n\n<li id=\"htoc-en-la-entrada-de-tu-nombre-de-dominio-haz-clic-en-cualquiera-de-las-entradas-dns-dmarc-opcional\">En la entrada de tu nombre de dominio, <strong>haz clic en cualquiera de las entradas DNS<\/strong> <strong>\u2192<\/strong> <strong>DMARC (opcional)<\/strong>.<\/li>\n<\/ol>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"342\" src=\"https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-7-1024x342.png\" alt=\"\" class=\"wp-image-4239\" srcset=\"https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-7-1024x342.png 1024w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-7-300x100.png 300w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-7-768x256.png 768w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-7-50x17.png 50w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-7-60x20.png 60w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-7-100x33.png 100w, https:\/\/kb.mailfence.com\/wp-content\/uploads\/2024\/06\/image-7.png 1075w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>Copia<\/strong> el Nombre\/Host DMARC y los valores del registro para a\u00f1adirlos en tu nombre de dominio, hosting o proveedor de servicios DNS.<\/figcaption><\/figure>\n<\/div>\n\n\n<p>2. Antes de pulsar validar:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La entrada DMARC sugerida es <em>s\u00f3lo de informe<\/em> (es decir, recibir\u00e1s informes DMARC indicando intentos de suplantaci\u00f3n de tus direcciones basadas en dominios).\nAseg\u00farate de que has sustituido \u00ab[YOUR-EMAIL-ADDRESS]\u00bb por una direcci\u00f3n <strong>existente basada en el nombre de dominio que acabas de a\u00f1adir<\/strong>.\nRecibir\u00e1s un informe DMARC (por ejemplo, a diario) de los servidores de correo que admitan el env\u00edo de informes DMARC agregados.  \n<ul class=\"wp-block-list\">\n<li id=\"htoc-si-la-direcci-n-de-correo-electr-nico-de-la-etiqueta-rua-mailto-no-se-basa-en-un-nombre-de-dominio-que-acabas-de-a-adir-entonces-se-necesitar-a-una-autorizaci-n-de-informe-externa\">Si la direcci\u00f3n de correo electr\u00f3nico de la etiqueta <strong>rua=mailto<\/strong>: no se basa en un nombre de dominio que acabas de a\u00f1adir, entonces se necesitar\u00eda <a href=\"https:\/\/dmarc.org\/2015\/08\/receiving-dmarc-reports-outside-your-domain\/\">una autorizaci\u00f3n de informe externa<\/a>.<\/li>\n\n\n\n<li id=\"htoc-puedes-dejar-de-recibir-informes-dmarc-en-cualquier-momento\">Puedes <a href=\"https:\/\/kb.mailfence.com\/kb\/how-can-i-stop-receiving-dmarc-reports\/\">dejar de recibir informes DMARC<\/a> en cualquier momento.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li id=\"htoc-la-p-especifica-la-acci-n-a-tomar-para-los-correos-que-fallen-dmarc-y-ninguna-significa-b-sicamente-no-hacer-nada-si-fallan-spf-y-o-dkim-y-seguir-la-pol-tica-del-extremo-receptor-las-otras-opciones-son-poner-en-cuarentena-y-rechazar-aseg-rate-de-que-comprendes-los-riesgos-que-conlleva-la-entrega-de-tu-correo-electr-nico-antes-de-utilizar-una-pol-tica-distinta-de-ninguna\">La <strong>&#8216;p=<\/strong> &#8216; especifica la acci\u00f3n a tomar para los correos que fallen DMARC y <em>ninguna<\/em> significa b\u00e1sicamente no hacer nada (si fallan SPF y\/o DKIM) y seguir la pol\u00edtica del extremo receptor. Las otras opciones son <em>poner en cuarentena<\/em> y <em>rechazar<\/em>. Aseg\u00farate de que comprendes los <a href=\"https:\/\/es.wikipedia.org\/wiki\/DMARC\">riesgos que conlleva la entrega de tu correo electr\u00f3nico<\/a> antes de utilizar una pol\u00edtica distinta de <em>ninguna<\/em>.<\/li>\n\n\n\n<li id=\"htoc-si-ya-existe-un-registro-dns-txt-con-el-nombre-host-dmarc-para-tu-dominio-edita-este-registro-en-lugar-de-crear-uno-nuevo-esto-es-importante-ya-que-no-puedes-tener-varios-registros-dmarc-para-un-dominio-determinado\">Si ya existe un registro DNS TXT con el nombre\/host <strong>\u00ab_dmarc<\/strong> \u00bb para tu dominio, edita este registro en lugar de crear uno nuevo.\nEsto es importante, ya que no puedes tener varios registros DMARC para un dominio determinado. <\/li>\n<\/ul>\n\n\n\n<p>3. Una vez incluido correctamente el registro DNS TXT correspondiente, pulsa en <strong>Verificar<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-ht-blocks-messages wp-block-hb-message wp-block-hb-message--withicon is-style-info\">Los registros DNS pueden tardar alg\u00fan tiempo en propagarse. Puedes utilizar <a href=\"https:\/\/www.whatsmydns.net\/\">esta herramienta<\/a> para comprobarlo. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-agente-de-transferencia-de-correo-seguridad-estricta-de-transporte-mta-sts\"><strong>Agente de transferencia de correo-Seguridad estricta de transporte<\/strong> (<strong><strong>MTA-STS<\/strong><\/strong>)<\/h2>\n\n\n\n<p>Consulta <a href=\"https:\/\/blog.mailfence.com\/es\/mailfence-sigue-mejorando-la-seguridad-para-sus-usuarios\/\">este blogpost<\/a> para leer sobre: la defensa contra el spoofing, la compatibilidad de Mailfence con DANE y MTA-STS.<\/p>\n\n\n\n<p>Puedes configurar MTA-STS para tu nombre de dominio (la pol\u00edtica MTA-STS de Mailfence puede encontrarse <a href=\"https:\/\/mta-sts.mailfence.com\/.well-known\/mta-sts.txt\">aqu\u00ed<\/a>). Si no tienes un alojamiento disponible para tu dominio, puedes utilizar una <a href=\"https:\/\/emailsecurity.blog\/hosting-your-mta-sts-policy-using-github-pages\">p\u00e1gina de Github<\/a>. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Obligatorio Para crear una defensa contra el spoofing, no necesitas realizar ninguna modificaci\u00f3n si s\u00f3lo utilizas direcciones basadas en el nombre de dominio mailfence.com. Sin embargo, si has a\u00f1adido tu propio nombre de dominio, debes configurar las siguientes entradas DNS para evitar la suplantaci\u00f3n del correo electr\u00f3nico y garantizar la&#8230;<\/p>\n","protected":false},"author":1,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[1199],"ht-kb-tag":[],"class_list":["post-8794","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-dominio-personalizado"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Defensa contra el spoofing: \u00bfc\u00f3mo configurarlo para su dominio? - Mailfence Support<\/title>\n<meta name=\"description\" content=\"Establece la defensa contra el spoofing a\u00f1adiendo registros SPF, DKIM y DMARC para evitar la suplantaci\u00f3n de identidad del correo electr\u00f3nico\" \/>\n<meta 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