{"id":41494,"date":"2026-11-13T11:11:41","date_gmt":"2026-11-13T10:11:41","guid":{"rendered":"https:\/\/www.retarus.com\/blog\/?p=41494"},"modified":"2026-11-13T13:41:24","modified_gmt":"2026-11-13T12:41:24","slug":"lo-que-nos-revela-la-nueva-caida-de-ms-365-sobre-la-dependencia-del-correo-electronico","status":"publish","type":"post","link":"https:\/\/www.retarus.com\/blog\/es\/lo-que-nos-revela-la-nueva-caida-de-ms-365-sobre-la-dependencia-del-correo-electronico\/","title":{"rendered":"Lo que nos revela la nueva ca\u00edda de MS 365 sobre la dependencia del correo electr\u00f3nico"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Una interrupci\u00f3n a gran escala en Microsoft 365 vuelve a poner de manifiesto lo mucho que dependen las empresas de la disponibilidad de los servicios centrales en la nube. Desde ayer por la noche, se han visto afectados, entre otros, Exchange Online, Teams, SharePoint, Copilot y Defender XDR, seg\u00fan <a href=\"https:\/\/www.heise.de\/news\/Microsoft-365-Stoerung-Serverausfaelle-legen-Teams-Exchange-und-Copilot-lahm-11523565.html\">informa heise online<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Seg\u00fan Microsoft, un n\u00famero inusualmente alto de servidores dej\u00f3 de funcionar de forma inesperada. La sobrecarga resultante en la infraestructura restante agrav\u00f3 a\u00fan m\u00e1s la aver\u00eda. El incidente deja claro lo graves que pueden ser las consecuencias cuando varios servicios cr\u00edticos para el negocio dependen de la misma infraestructura.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Una ca\u00edda del proveedor, muchas consecuencias<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esta nueva interrupci\u00f3n pone de manifiesto el papel fundamental que desempe\u00f1a el correo electr\u00f3nico en el funcionamiento de muchas empresas. Por correo electr\u00f3nico se gestionan ofertas, facturas, autorizaciones y consultas de clientes. Si Exchange Online no est\u00e1 disponible, gran parte de la actividad diaria se paraliza. Incluso cuando otros servicios ya vuelven a funcionar. Y es que, aunque Exchange Online pueda volver a procesar los mensajes entrantes, a veces lo hace con retrasos considerables, como demuestran las experiencias de <a href=\"https:\/\/www.retarus.com\/blog\/es\/wenn-selbst-microsoft-ins-stocken-geraet-lektionen-aus-aktuellen-e-mail-ausfaellen\/\" data-type=\"link\" data-id=\"https:\/\/www.retarus.com\/blog\/es\/wenn-selbst-microsoft-ins-stocken-geraet-lektionen-aus-aktuellen-e-mail-ausfaellen\/\">fallos anteriores<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>La redundancia no es lo mismo que la independencia<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Este incidente pone de manifiesto los l\u00edmites de los conceptos cl\u00e1sicos de redundancia: las capacidades adicionales o los centros de datos redundantes dentro de la misma infraestructura del proveedor no son suficientes ante fallos de gran alcance. Lo que realmente importa es contar con un plan de contingencia verdaderamente independiente: un sistema de correo electr\u00f3nico de emergencia que est\u00e9 totalmente desvinculado del proveedor de correo electr\u00f3nico principal y de su infraestructura.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Solo as\u00ed se puede garantizar que la comunicaci\u00f3n cr\u00edtica para el negocio siga funcionando incluso si el proveedor habitual sufre una interrupci\u00f3n generalizada del servicio.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esta independencia tambi\u00e9n cobra importancia en el contexto de los requisitos de la NIS2. Las entidades afectadas deben establecer medidas adecuadas para mantener el funcionamiento y gestionar los incidentes de seguridad. Esto incluye tambi\u00e9n proteger las v\u00edas de comunicaci\u00f3n cr\u00edticas para casos de emergencia.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6af70e2d50ba7&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6af70e2d50ba7\" class=\"wp-block-image aligncenter size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"355\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/11\/retarus_email-continuity_mobile-2048x709-1-1024x355.png\" alt=\"\" class=\"wp-image-41476\" srcset=\"https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/11\/retarus_email-continuity_mobile-2048x709-1-1024x355.png 1024w, https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/11\/retarus_email-continuity_mobile-2048x709-1-300x104.png 300w, https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/11\/retarus_email-continuity_mobile-2048x709-1-765x265.png 765w, https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/11\/retarus_email-continuity_mobile-2048x709-1-1536x532.png 1536w, https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/11\/retarus_email-continuity_mobile-2048x709-1.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\"><em>Acceso en cualquier momento y desde cualquier lugar: en caso de emergencia, tambi\u00e9n puedes acceder a los clientes de correo web desde dispositivos m\u00f3viles<\/em>.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ah\u00ed es precisamente donde entra en juego <a href=\"https:\/\/www.retarus.com\/es\/products\/email-security\/email-continuity\/\" data-type=\"link\" data-id=\"https:\/\/www.retarus.com\/es\/products\/email-security\/email-continuity\/\">Retarus Email Continuity<\/a>: la soluci\u00f3n funciona independientemente de la infraestructura de correo electr\u00f3nico principal y se gestiona en centros de datos certificados dentro de la UE.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si falla el sistema habitual de correo electr\u00f3nico, los empleados tienen a su disposici\u00f3n un buz\u00f3n de correo web independiente. As\u00ed pueden seguir enviando y recibiendo mensajes desde sus direcciones de correo habituales, incluso desde dispositivos m\u00f3viles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00bfQuieres proteger de forma independiente tu comunicaci\u00f3n por correo electr\u00f3nico, que es fundamental para tu negocio? <a href=\"https:\/\/www.retarus.com\/es\/contact\/?interest=4#general-inquiry\" data-type=\"link\" data-id=\"https:\/\/www.retarus.com\/es\/contact\/?interest=4#general-inquiry\">Habla con nosotros<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Una interrupci\u00f3n a gran escala en Microsoft 365 vuelve a poner de manifiesto lo mucho que dependen las empresas de la disponibilidad de los servicios centrales en la nube. <\/p>\n","protected":false},"author":12,"featured_media":41495,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"ret_read_more_text":"","ret_thumb_border":false,"footnotes":""},"categories":[3066,6],"tags":[2155,1773],"ret_content_type":[],"class_list":["post-41494","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seguridad-del-correo","category-sin-categorizar","tag-email-continuity","tag-email-security"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Lo que nos revela la nueva ca\u00edda de MS 365 sobre la dependencia del correo electr\u00f3nico | Retarus Blog<\/title>\n<meta name=\"description\" content=\"Una interrupci\u00f3n a gran escala en Microsoft 365 vuelve a poner de manifiesto lo mucho que dependen las empresas de la 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