[{"data":1,"prerenderedAt":1369},["ShallowReactive",2],{"blog-api:articulos\u002F{slug}:como-funcionan-filtros-antispam-spam-scoring-tecnicas-evasion:1:::":3,"i18nPorPagina":601},{"estado":4,"data":5,"meta":600},"ok",{"slug":6,"ruta":7,"titulo":8,"extracto":9,"imagen":10,"publicado":17,"actualizado":17,"minutos_lectura":18,"etiqueta_principal":19,"meta_titulo":22,"meta_descripcion":23,"og":24,"autor":28,"etiquetas":32,"bloques":52,"relacionados":553,"json_ld":591},"como-funcionan-filtros-antispam-spam-scoring-tecnicas-evasion","\u002Fcomo-funcionan-filtros-antispam-spam-scoring-tecnicas-evasion\u002F","Cómo funcionan los filtros antispam: técnicas, SPAM Scoring y cómo los spammers intentan eludirlos","Los filtros antispam no son magia: son sistemas de análisis multicapa que evalúan el asunto, el contenido, los adjuntos y el remitente de cada mensaje. Te explicamos cómo funcionan, qué es el SPAM Scoring, los filtros bayesianos y cómo los spammers intentan eludirlos.",{"fichero":11,"url":12,"alt":13,"ancho":14,"alto":15,"pie":16},"3668a9fc16961cef24bac416c61bbbe7695b0e7b44c12596d306af6b592edd44.jpg","https:\u002F\u002Fimg.sys4net.com\u002Fm\u002Fimg\u002F3668a9fc16961cef24bac416c61bbbe7695b0e7b44c12596d306af6b592edd44.jpg","Iconos de sobres de correo electrónico iluminados en colores azul, naranja y blanco sobre fondo oscuro, representando flujo",2000,1333,null,"2026-06-02T11:46:31+02:00",9,{"slug":20,"nombre":20,"ruta":21},"correo","\u002Ftag\u002Fcorreo\u002F","Cómo funcionan los filtros antispam y el SPAM Scoring │ sys4net","Los filtros antispam analizan asunto, contenido, adjuntos y remitente. Qué es el SPAM Scoring, cómo funcionan los filtros bayesianos y cómo se evaden.",{"titulo":25,"descripcion":26,"imagen":27},"Cómo funcionan los servicios antispam: guía técnica completa","Análisis multicapa, filtros bayesianos, blacklists, SPF\u002FDKIM y SPAM Scoring: así funciona un sistema antispam por dentro. Guía técnica completa con ejemplos reales de sys4net.",{"fichero":11,"url":12,"alt":13,"ancho":14,"alto":15,"pie":16},{"slug":29,"nombre":30,"ruta":31},"sys4net","sys4net Data Center","\u002Fauthor\u002Fsys4net\u002F",[33,34,37,40,44,48],{"slug":20,"nombre":20,"ruta":21},{"slug":35,"nombre":35,"ruta":36},"seguridad","\u002Ftag\u002Fseguridad\u002F",{"slug":38,"nombre":38,"ruta":39},"antispam","\u002Ftag\u002Fantispam\u002F",{"slug":41,"nombre":42,"ruta":43},"filtros-bayesianos","filtros bayesianos","\u002Ftag\u002Ffiltros-bayesianos\u002F",{"slug":45,"nombre":46,"ruta":47},"spam-scoring","SPAM Scoring","\u002Ftag\u002Fspam-scoring\u002F",{"slug":49,"nombre":50,"ruta":51},"blacklist-correo","blacklist correo","\u002Ftag\u002Fblacklist-correo\u002F",[53,58,63,72,77,81,89,104,112,116,128,132,136,158,162,166,192,196,200,217,221,225,252,256,264,307,315,323,327,331,353,357,361,365,373,379,383,391,396,400,414,421,425,433,437,452,456,460,471,480,484,488,492,496,500,504,508,512,516,520,524,528,532,536,540],{"type":54,"content":55},"heading",[56],{"t":57},"¿Qué es el spam? Definición y tipos",{"type":59,"content":60},"paragraph",[61],{"t":62},"Todos hemos recibido spam, pero no siempre se distingue claramente lo que es spam de lo que no lo es. El término SPAM, popularizado por un sketch de Monty Python que ridiculizaba su omnipresencia, se aplica al correo electrónico no solicitado enviado de forma masiva.",{"type":59,"content":64},[65,67,70],{"t":66},"Sin embargo, hay una distinción importante que muchas veces se pasa por alto: ",{"t":68,"b":69},"no todo correo publicitario es spam",true,{"t":71},".",{"type":73,"content":74},"subheading",[75],{"t":76},"Correo comercial legítimo vs. spam ilícito",{"type":59,"content":78},[79],{"t":80},"Imagina que compras en una tienda online y, al registrarte, marcas (o no desmarcas) la opción de recibir su newsletter. Eso es publicidad a la que has dado tu consentimiento. La empresa que lo envía cumple la legislación vigente (RGPD en Europa) y debe ofrecerte la posibilidad de darte de baja en cualquier momento mediante un procedimiento sencillo.",{"type":59,"content":82},[83,85,87],{"t":84},"El ",{"t":86,"b":69},"spam ilícito",{"t":88},", en cambio, se caracteriza por:",{"type":90,"items":91},"list",[92,95,98,101],[93],{"t":94},"Enviarse sin el consentimiento del destinatario.",[96],{"t":97},"Provenir de fuentes no autorizadas o comprometidas.",[99],{"t":100},"Contener frecuentemente phishing, malware o enlaces fraudulentos.",[102],{"t":103},"No ofrecer mecanismo real de baja.",{"type":59,"content":105},[106,108,110],{"t":107},"Una parte cada vez mayor del spam actual no es simplemente publicidad molesta: es un ",{"t":109,"b":69},"vector de ataque activo",{"t":111},". El phishing, el malware y el ransomware llegan principalmente por correo electrónico camuflado como spam.",{"type":54,"content":113},[114],{"t":115},"Cómo funcionan los filtros antispam: análisis multicapa",{"type":59,"content":117},[118,120,122,124,126],{"t":119},"Los sistemas antispam modernos no se basan en una única técnica de detección, sino en un ",{"t":121,"b":69},"análisis multicapa",{"t":123}," que evalúa simultáneamente múltiples características de cada mensaje. Cada capa aporta una puntuación parcial que contribuye al ",{"t":125,"b":69},"SPAM Score",{"t":127}," final del mensaje.",{"type":73,"content":129},[130],{"t":131},"Capa 1: análisis del asunto del mensaje",{"type":59,"content":133},[134],{"t":135},"El asunto es la primera señal de alerta. Los patrones más habituales de spam en el asunto incluyen:",{"type":90,"items":137},[138,143,148,153],[139,141],{"t":140,"b":69},"Uso excesivo de mayúsculas:",{"t":142}," \"GANA DINERO HOY\" → señal clara de spam.",[144,146],{"t":145,"b":69},"Palabras clave de spam:",{"t":147}," \"gratis\", \"oferta exclusiva\", \"haz clic ahora\", \"ganador\", términos relacionados con medicamentos o adultos.",[149,151],{"t":150,"b":69},"Caracteres especiales para eludir filtros:",{"t":152}," \"G@na d1nero\" → sustitución de letras por caracteres similares.",[154,156],{"t":155,"b":69},"Urgencia artificial:",{"t":157}," \"Últimas 24 horas\", \"Expira hoy\", \"Actúa ahora\".",{"type":73,"content":159},[160],{"t":161},"Capa 2: análisis del contenido del cuerpo",{"type":59,"content":163},[164],{"t":165},"El filtro examina el cuerpo completo del mensaje aplicando varias técnicas:",{"type":90,"items":167},[168,173,182,187],[169,171],{"t":170,"b":69},"Análisis de palabras clave:",{"t":172}," búsqueda de términos asociados estadísticamente al spam en bases de datos actualizadas continuamente.",[174,176,178,180],{"t":175,"b":69},"Filtros bayesianos:",{"t":177}," sistema probabilístico que calcula la probabilidad de que un mensaje sea spam en función de la frecuencia con la que las palabras que contiene aparecen en mensajes spam conocidos frente a mensajes legítimos (",{"t":179,"i":69},"ham",{"t":181},"). Los filtros bayesianos aprenden y se adaptan con el tiempo a medida que procesan más mensajes.",[183,185],{"t":184,"b":69},"Análisis de enlaces:",{"t":186}," verificación de las URLs incluidas en el mensaje contra bases de datos de sitios de phishing, malware y fraude conocidos.",[188,190],{"t":189,"b":69},"Ratio texto\u002Fimágenes:",{"t":191}," el spam frecuentemente incluye poco texto y muchas imágenes para eludir el análisis textual. Un ratio anómalo incrementa la puntuación de spam.",{"type":73,"content":193},[194],{"t":195},"Capa 3: análisis de archivos adjuntos",{"type":59,"content":197},[198],{"t":199},"Los adjuntos son uno de los principales vectores de distribución de malware. Los filtros los analizan en busca de:",{"type":90,"items":201},[202,207,212],[203,205],{"t":204,"b":69},"Virus y malware conocidos:",{"t":206}," análisis con motores antivirus integrados.",[208,210],{"t":209,"b":69},"Extensiones peligrosas:",{"t":211}," ejecutables (.exe, .bat, .vbs, .ps1), macros en documentos Office, scripts, etc.",[213,215],{"t":214,"b":69},"Técnicas de ofuscación:",{"t":216}," archivos comprimidos con contraseña, dobles extensiones (.pdf.exe), nombres que imitan documentos legítimos (\"Factura_2024.exe\").",{"type":73,"content":218},[219],{"t":220},"Capa 4: análisis del remitente y autenticación",{"type":59,"content":222},[223],{"t":224},"Esta es la capa con mayor impacto en la efectividad del filtro. Analiza quién envía el mensaje y si tiene autorización para hacerlo:",{"type":90,"items":226},[227,232,237,242,247],[228,230],{"t":229,"b":69},"Reputación de la IP emisora:",{"t":231}," verificación contra múltiples blacklists de referencia (Spamhaus, Barracuda, SpamCop, SORBS). Una IP listada es señal fuerte de spam.",[233,235],{"t":234,"b":69},"Validación SPF:",{"t":236}," comprueba si el servidor emisor está autorizado por el dominio del remitente. Un fallo SPF incrementa significativamente la puntuación de spam.",[238,240],{"t":239,"b":69},"Validación DKIM:",{"t":241}," verifica la firma criptográfica del mensaje para confirmar que no ha sido alterado y que el dominio lo ha firmado legítimamente.",[243,245],{"t":244,"b":69},"Reverse DNS (PTR):",{"t":246}," verificación de que la IP emisora tiene un registro DNS inverso coherente. Los servidores de spam suelen carecer de él.",[248,250],{"t":249,"b":69},"Consistencia de cabeceras SMTP:",{"t":251}," análisis de los campos del protocolo de envío para detectar inconsistencias que delatan reenvíos fraudulentos o suplantaciones.",{"type":54,"content":253},[254],{"t":255},"El SPAM Scoring: cómo se toma la decisión final",{"type":59,"content":257},[258,260,262],{"t":259},"Con todos los resultados del análisis multicapa, el sistema calcula una ",{"t":261,"b":69},"puntuación global",{"t":263}," (SPAM Score) para cada mensaje:",{"type":265,"cabecera":266,"filas":276},"table",[267,270,273],[268],{"t":269},"Puntuación SPAM Score",[271],{"t":272},"Acción del filtro",[274],{"t":275},"Resultado para el usuario",[277,287,297],[278,281,284],[279],{"t":280},"Inferior a 2",[282],{"t":283},"Entrega normal",[285],{"t":286},"Llega a la bandeja de entrada sin modificaciones",[288,291,294],[289],{"t":290},"Entre 2 y 5",[292],{"t":293},"Etiquetado como sospechoso",[295],{"t":296},"Llega con [SPAM] en el asunto para que el usuario decida",[298,301,304],[299],{"t":300},"Superior a 5",[302],{"t":303},"Bloqueado y cuarentena",[305],{"t":306},"Retenido para revisión o eliminado automáticamente",{"type":59,"content":308},[309,311,313],{"t":310},"Los umbrales son ",{"t":312,"b":69},"configurables",{"t":314}," por cada organización. Un filtro muy agresivo reduce el spam recibido pero aumenta el riesgo de falsos positivos (correo legítimo bloqueado). Un filtro permisivo reduce los falsos positivos pero deja pasar más spam.",{"type":59,"content":316},[317,319,321],{"t":318},"Por eso la ",{"t":320,"b":69},"cuarentena",{"t":322}," es un elemento esencial: los mensajes bloqueados no se pierden definitivamente, sino que se retienen para que el usuario pueda revisarlos y liberar los que sean legítimos.",{"type":54,"content":324},[325],{"t":326},"¿Son todos los filtros antispam igual de efectivos?",{"type":59,"content":328},[329],{"t":330},"No. La efectividad depende de varios factores:",{"type":90,"items":332},[333,338,343,348],[334,336],{"t":335,"b":69},"Actualización continua",{"t":337}," de las bases de datos de blacklists, patrones de spam y firmas de malware. Un filtro con datos desactualizados deja pasar spam nuevo.",[339,341],{"t":340,"b":69},"Uso de inteligencia artificial y aprendizaje automático",{"t":342}," para adaptar los modelos de detección a las nuevas técnicas de los spammers.",[344,346],{"t":345,"b":69},"Volumen de tráfico analizado:",{"t":347}," los servicios que procesan grandes volúmenes de correo tienen mejores modelos estadísticos porque disponen de más datos de entrenamiento.",[349,351],{"t":350,"b":69},"Combinación de múltiples técnicas",{"t":352}," (bayesiano + blacklists + SPF\u002FDKIM + análisis de contenido + IA) en lugar de depender de una única capa.",{"type":54,"content":354},[355],{"t":356},"Cómo los spammers intentan eludir los filtros",{"type":59,"content":358},[359],{"t":360},"Los spammers están en constante evolución, adaptando sus técnicas para superar los sistemas de detección. Los dos métodos más habituales en el contexto del hosting son:",{"type":73,"content":362},[363],{"t":364},"1. Compromiso de cuentas de correo legítimas por fuerza bruta",{"type":59,"content":366},[367,369,371],{"t":368},"En lugar de enviar spam desde IPs con mala reputación, los spammers atacan cuentas de correo existentes mediante ataques de ",{"t":370,"b":69},"fuerza bruta",{"t":372},": prueban combinaciones de contraseñas a alta velocidad hasta dar con la correcta. Al enviar spam desde una cuenta legítima de un dominio con buena reputación, los filtros basados en blacklists y reputación de IP consideran el mensaje confiable.",{"type":59,"content":374},[375,377],{"t":376,"b":69},"Cómo protegerse:",{"t":378}," contraseñas robustas (mínimo 12 caracteres, combinando letras, números y símbolos), autenticación en dos factores (2FA) y monitorización de patrones de envío anómalos.",{"type":73,"content":380},[381],{"t":382},"2. Explotación de formularios de contacto sin protección",{"type":59,"content":384},[385,387,389],{"t":386},"Muchas webs incluyen formularios de contacto que generan y envían correos automáticamente a través del servidor web. Si ese formulario no tiene verificación humana (CAPTCHA), los spammers pueden inyectar código que usa el servidor web como ",{"t":388,"i":69},"relay",{"t":390}," para enviar spam masivo. Al hacerlo desde la IP del servidor de la web (con buena reputación), el correo no aparece en blacklists.",{"type":59,"content":392},[393,394],{"t":376,"b":69},{"t":395}," implementar CAPTCHA o soluciones anti-bot (Google reCAPTCHA, hCaptcha, Cloudflare Turnstile) en todos los formularios web que generen envíos de correo.",{"type":54,"content":397},[398],{"t":399},"Cómo funciona SendGuardian, el servicio antispam de sys4net",{"type":59,"content":401},[402,405,407,408,410,412],{"t":403,"b":69,"href":404},"SendGuardian","https:\u002F\u002Fsys4net.com\u002Fantispam",{"t":406}," es el servicio de filtrado de correo de ",{"t":29,"b":69},{"t":409},", diseñado para filtrar hasta el ",{"t":411,"b":69},"99% del spam",{"t":413}," antes de que llegue a los servidores del cliente.",{"type":415,"fichero":416,"url":417,"alt":418,"ancho":419,"alto":420,"pie":16},"image","bf9dd64876ce385b7f8524d29180ceb34494ca1bce5e1f43c1f74287eef2cea1.jpg","https:\u002F\u002Fimg.sys4net.com\u002Fm\u002Fimg\u002Fbf9dd64876ce385b7f8524d29180ceb34494ca1bce5e1f43c1f74287eef2cea1.jpg","SendGuardian antispam filtra correos no deseados con escudo protector, bloqueando spam y permitiendo solo mensajes legítimos",1536,1024,{"type":73,"content":422},[423],{"t":424},"Arquitectura: filtrado perimetral antes del servidor de destino",{"type":59,"content":426},[427,429,431],{"t":428},"Su principio es sencillo y efectivo: en lugar de que el correo llegue directamente a tu servidor, ",{"t":430,"b":69},"pasa primero por SendGuardian",{"t":432},". Esto se consigue modificando el registro MX del dominio para redirigir todo el correo entrante hacia los servidores de filtrado de SendGuardian.",{"type":59,"content":434},[435],{"t":436},"El proceso completo:",{"type":438,"items":439},"ordered",[440,443,446,449],[441],{"t":442},"Un mensaje dirigido a tu dominio llega a los servidores de SendGuardian.",[444],{"t":445},"SendGuardian aplica el análisis multicapa: blacklists, SPF\u002FDKIM, filtros bayesianos, análisis de contenido y adjuntos, e inteligencia artificial.",[447],{"t":448},"Si el mensaje es legítimo, se entrega al servidor del cliente con mínimo retardo.",[450],{"t":451},"Si es spam o potencialmente malicioso, se retiene en cuarentena.",{"type":73,"content":453},[454],{"t":455},"Panel de gestión y cuarentena accesible para el usuario",{"type":59,"content":457},[458],{"t":459},"Los usuarios disponen de un panel de gestión donde pueden:",{"type":90,"items":461},[462,465,468],[463],{"t":464},"Revisar los mensajes retenidos en cuarentena y decidir si liberarlos o eliminarlos.",[466],{"t":467},"Gestionar listas blancas (remitentes siempre permitidos) y listas negras (remitentes siempre bloqueados).",[469],{"t":470},"Consultar el historial de tráfico de correo y los mensajes bloqueados con sus puntuaciones.",{"type":59,"content":472},[473,475,478],{"t":474},"Todo ello es accesible directamente desde el ",{"t":476,"href":477},"área de cliente de sys4net","https:\u002F\u002Fsys4net.com\u002Fsoporte",{"t":479},", sin necesidad de intervención técnica para las operaciones habituales.",{"type":54,"content":481},[482],{"t":483},"Preguntas frecuentes sobre los filtros antispam",{"type":73,"content":485},[486],{"t":487},"¿Qué es el spam en el correo electrónico?",{"type":59,"content":489},[490],{"t":491},"El spam es correo no solicitado enviado masivamente. Aunque se asocia a publicidad, una parte significativa es malicioso (phishing, malware, ransomware). La diferencia entre publicidad legítima y spam ilícito es el consentimiento del destinatario.",{"type":73,"content":493},[494],{"t":495},"¿Cómo funcionan los filtros antispam?",{"type":59,"content":497},[498],{"t":499},"Mediante análisis multicapa: asunto (palabras clave, mayúsculas), contenido (filtros bayesianos, análisis de enlaces), adjuntos (virus, extensiones peligrosas) y remitente (blacklists, SPF, DKIM, reverse DNS). Cada análisis aporta una puntuación parcial al SPAM Score final.",{"type":73,"content":501},[502],{"t":503},"¿Qué es el SPAM Scoring?",{"type":59,"content":505},[506],{"t":507},"El sistema de puntuación que los filtros asignan a cada mensaje según sus análisis. A partir de umbrales configurables, el mensaje se entrega normalmente, se etiqueta con [SPAM] o se envía a cuarentena.",{"type":73,"content":509},[510],{"t":511},"¿Qué son las blacklists de correo?",{"type":59,"content":513},[514],{"t":515},"Bases de datos de IPs y dominios conocidos por enviar spam. Los filtros comprueban si la IP emisora aparece en estas listas. Una IP listada genera una puntuación elevada o el rechazo directo del mensaje.",{"type":73,"content":517},[518],{"t":519},"¿Cómo consiguen los spammers eludir los filtros?",{"type":59,"content":521},[522],{"t":523},"Comprometiendo cuentas de correo legítimas por fuerza bruta para enviar spam desde IPs con buena reputación, o explotando formularios de contacto sin CAPTCHA para usar el servidor web como relay sin estar en listas negras.",{"type":73,"content":525},[526],{"t":527},"¿Qué es la cuarentena de correo?",{"type":59,"content":529},[530],{"t":531},"El área donde se retienen los mensajes considerados spam o sospechosos. Permite a los usuarios revisarlos y liberar los legítimos (falsos positivos), evitando la pérdida de correo importante por un bloqueo incorrecto.",{"type":54,"content":533},[534],{"t":535},"La defensa antispam como parte integral de la seguridad del correo",{"type":59,"content":537},[538],{"t":539},"El filtrado antispam no es un elemento aislado: forma parte de una estrategia más amplia de seguridad del correo que incluye SPF, DKIM y DMARC para autenticación del emisor, cifrado TLS para el tráfico en tránsito, y monitorización continua de patrones anómalos.",{"type":59,"content":541},[542,544,545,547,548,550,552],{"t":543},"En ",{"t":29,"b":69},{"t":546},", ",{"t":403,"href":404},{"t":549}," integra todas estas capas en un servicio gestionado que protege el correo empresarial sin que el equipo de IT deba gestionar la complejidad técnica subyacente. Si tienes dudas sobre cómo proteger el correo de tu empresa o quieres saber más sobre SendGuardian, ",{"t":551,"href":477},"contacta con nuestro equipo",{"t":71},[554,567,579],{"slug":555,"ruta":556,"titulo":557,"extracto":558,"imagen":559,"publicado":564,"actualizado":564,"minutos_lectura":565,"etiqueta_principal":566},"como-configurar-un-correo-electronico-en-outlook-paso-a-paso","\u002Fcomo-configurar-un-correo-electronico-en-outlook-paso-a-paso\u002F","Cómo configurar un correo electrónico en Outlook paso a paso","Configurar una cuenta de correo corporativo en Outlook es un proceso de cinco minutos si tienes los datos correctos delante. El problema habitual no es el…",{"fichero":560,"url":561,"alt":562,"ancho":14,"alto":563,"pie":16},"3ad01416db2201f19f40aaf2978da1a6f87d0ad6b9472772ae4453be255ad241.jpg","https:\u002F\u002Fimg.sys4net.com\u002Fm\u002Fimg\u002F3ad01416db2201f19f40aaf2978da1a6f87d0ad6b9472772ae4453be255ad241.jpg","Dedo tocando el icono de Outlook en pantalla de smartphone para abrir la aplicación de correo electrónico.",1125,"2026-06-24T16:41:17+02:00",12,{"slug":20,"nombre":20,"ruta":21},{"slug":568,"ruta":569,"titulo":570,"extracto":571,"imagen":572,"publicado":576,"actualizado":576,"minutos_lectura":577,"etiqueta_principal":578},"imap-vs-pop3-cual-elegir-para-tu-correo-electronico","\u002Fimap-vs-pop3-cual-elegir-para-tu-correo-electronico\u002F","IMAP vs POP3: cuál elegir para tu correo electrónico","Si usas el correo en más de un dispositivo, la respuesta es IMAP: los mensajes quedan en el servidor y están sincronizados en tiempo real en el ordenador, el…",{"fichero":573,"url":574,"alt":575,"ancho":14,"alto":563,"pie":16},"3050e279fca1f314993c5ef0e45b5587b1dc1966ae18452dc6a566db4d0f3de7.jpg","https:\u002F\u002Fimg.sys4net.com\u002Fm\u002Fimg\u002F3050e279fca1f314993c5ef0e45b5587b1dc1966ae18452dc6a566db4d0f3de7.jpg","Unidad SSD NVMe y conector SCSI en placa base, representando protocolos de transferencia de datos","2026-06-24T16:36:29+02:00",17,{"slug":20,"nombre":20,"ruta":21},{"slug":580,"ruta":581,"titulo":582,"extracto":583,"imagen":584,"publicado":588,"actualizado":588,"minutos_lectura":589,"etiqueta_principal":590},"que-es-imap-y-como-funciona","\u002Fque-es-imap-y-como-funciona\u002F","Qué es IMAP y cómo funciona","IMAP (Internet Message Access Protocol) es el protocolo de correo electrónico que mantiene tus mensajes en el servidor y los sincroniza en tiempo real entre…",{"fichero":585,"url":586,"alt":587,"ancho":14,"alto":563,"pie":16},"fc84f4bf5e9c375290f6375260ccabadc15c101ebdca2748181b1473cbb3e723.jpg","https:\u002F\u002Fimg.sys4net.com\u002Fm\u002Fimg\u002Ffc84f4bf5e9c375290f6375260ccabadc15c101ebdca2748181b1473cbb3e723.jpg","Smartphone y tablet mostrando la misma bandeja de entrada de correo sincronizada en tiempo real con múltiples mensajes de","2026-06-24T16:32:33+02:00",11,{"slug":20,"nombre":20,"ruta":21},{"blog_posting":592},{"@context":593,"@type":594,"headline":8,"description":23,"datePublished":17,"dateModified":17,"author":595,"mainEntityOfPage":597,"image":12},"https:\u002F\u002Fschema.org","BlogPosting",{"@type":596,"name":30},"Person",{"@type":598,"@id":599},"WebPage","https:\u002F\u002Fsys4net.com\u002Fblog\u002Fcomo-funcionan-filtros-antispam-spam-scoring-tecnicas-evasion\u002F",{},{"locale":602,"mensajes":603,"ausentes":1368},"es",{"menu":604,"footer":886,"rd":931},{"blog":605,"domains":613,"hosting":644,"cloud":695,"dedicated":736,"IA":757,"datacenter":788,"services":809,"company":830},["null","t",606,"b",607],0,["null","t",608,"i",609,"s",612],2,[610],{"t":611},3,"Blog",{"register":614,"register-caption":619,"ssl":624,"ssl-caption":629,"sendGuardian":634,"sendGuardian-caption":639},["null","t",606,"b",615],["null","t",608,"i",616,"s",618],[617],{"t":611},"Registro o traspaso de dominio",["null","t",606,"b",620],["null","t",608,"i",621,"s",623],[622],{"t":611},"Consolida tu presencia en internet",["null","t",606,"b",625],["null","t",608,"i",626,"s",628],[627],{"t":611},"Certificados de seguridad SSL",["null","t",606,"b",630],["null","t",608,"i",631,"s",633],[632],{"t":611},"La seguridad es lo primero",["null","t",606,"b",635],["null","t",608,"i",636,"s",638],[637],{"t":611},"Antispam SendGuardian",["null","t",606,"b",640],["null","t",608,"i",641,"s",643],[642],{"t":611},"Dile adiós al SPAM en tu correo",{"web":645,"web-caption":650,"wordpress":655,"wordpress-caption":660,"woocommerce":665,"woocommerce-caption":670,"prestashop":675,"prestashop-caption":680,"professional":685,"professional-caption":690},["null","t",606,"b",646],["null","t",608,"i",647,"s",649],[648],{"t":611},"Hosting Web",["null","t",606,"b",651],["null","t",608,"i",652,"s",654],[653],{"t":611},"Con almacenamiento NVMe",["null","t",606,"b",656],["null","t",608,"i",657,"s",659],[658],{"t":611},"Hosting WordPress",["null","t",606,"b",661],["null","t",608,"i",662,"s",664],[663],{"t":611},"Saca el máximo partido a tu WordPress",["null","t",606,"b",666],["null","t",608,"i",667,"s",669],[668],{"t":611},"Hosting WooCommerce",["null","t",606,"b",671],["null","t",608,"i",672,"s",674],[673],{"t":611},"Toda la potencia necesaria para tu e-commerce",["null","t",606,"b",676],["null","t",608,"i",677,"s",679],[678],{"t":611},"Hosting PrestaShop",["null","t",606,"b",681],["null","t",608,"i",682,"s",684],[683],{"t":611},"Empieza con tu tienda online sin complicaciones",["null","t",606,"b",686],["null","t",608,"i",687,"s",689],[688],{"t":611},"Hosting Pro",["null","t",606,"b",691],["null","t",608,"i",692,"s",694],[693],{"t":611},"Hosting multiusuario para revendedores",{"cloud":696,"caption":701,"cloudVpsHoras":706,"cloudVpsHoras-caption":711,"cloudEccomerce":716,"cloudEccomerce-caption":721,"cloudBackup":726,"cloudBackup-caption":731},["null","t",606,"b",697],["null","t",608,"i",698,"s",700],[699],{"t":611},"Cloud VPS",["null","t",606,"b",702],["null","t",608,"i",703,"s",705],[704],{"t":611},"Un servidor que escala con el crecimiento de tu negocio",["null","t",606,"b",707],["null","t",608,"i",708,"s",710],[709],{"t":611},"Cloud VPS por horas",["null","t",606,"b",712],["null","t",608,"i",713,"s",715],[714],{"t":611},"Servidores de pago por uso",["null","t",606,"b",717],["null","t",608,"i",718,"s",720],[719],{"t":611},"Cloud Ecommerce",["null","t",606,"b",722],["null","t",608,"i",723,"s",725],[724],{"t":611},"Un servidor diseñado para tu tienda online",["null","t",606,"b",727],["null","t",608,"i",728,"s",730],[729],{"t":611},"Cloud Backup",["null","t",606,"b",732],["null","t",608,"i",733,"s",735],[734],{"t":611},"Copias de seguridad y antivirus a tu medida",{"dedicated":737,"caption":742,"stock":747,"stock-caption":752},["null","t",606,"b",738],["null","t",608,"i",739,"s",741],[740],{"t":611},"Servidores dedicados",["null","t",606,"b",743],["null","t",608,"i",744,"s",746],[745],{"t":611},"Potencia absoluta, sin compartir",["null","t",606,"b",748],["null","t",608,"i",749,"s",751],[750],{"t":611},"Servidores dedicados de stock",["null","t",606,"b",753],["null","t",608,"i",754,"s",756],[755],{"t":611},"Gran stock de equipos al mejor precio",{"dedicatedIA":758,"dedicatedIA-caption":763,"n8n":768,"n8n-caption":773,"dokploy":778,"dokploy-caption":783},["null","t",606,"b",759],["null","t",608,"i",760,"s",762],[761],{"t":611},"Servidores IA",["null","t",606,"b",764],["null","t",608,"i",765,"s",767],[766],{"t":611},"GPU NVIDIA dedicada para inferencia local en España",["null","t",606,"b",769],["null","t",608,"i",770,"s",772],[771],{"t":611},"n8n",["null","t",606,"b",774],["null","t",608,"i",775,"s",777],[776],{"t":611},"El servidor que necesitas para tu automatización",["null","t",606,"b",779],["null","t",608,"i",780,"s",782],[781],{"t":611},"Dokploy",["null","t",606,"b",784],["null","t",608,"i",785,"s",787],[786],{"t":611},"Hosting Dokploy optimizado para desplegar tu stack moderno",{"housing":789,"housing-caption":794,"datacenter":799,"datacenter-caption":804},["null","t",606,"b",790],["null","t",608,"i",791,"s",793],[792],{"t":611},"Housing",["null","t",606,"b",795],["null","t",608,"i",796,"s",798],[797],{"t":611},"Tu propia infraestructura en nuestras instalaciones.",["null","t",606,"b",800],["null","t",608,"i",801,"s",803],[802],{"t":611},"Centro de datos",["null","t",606,"b",805],["null","t",608,"i",806,"s",808],[807],{"t":611},"Conoce nuestra infraestructura",{"beeroot360":810,"beeroot360-caption":815,"sysadmin":820,"sysadmin-caption":825},["null","t",606,"b",811],["null","t",608,"i",812,"s",814],[813],{"t":611},"Beeroot 360",["null","t",606,"b",816],["null","t",608,"i",817,"s",819],[818],{"t":611},"Infraestructura profesional",["null","t",606,"b",821],["null","t",608,"i",822,"s",824],[823],{"t":611},"Administración de sistemas",["null","t",606,"b",826],["null","t",608,"i",827,"s",829],[828],{"t":611},"Soporte técnico 24x7x365",{"about":831,"about-caption":836,"certification":841,"certification-caption":846,"partners":851,"partners-caption":856,"affiliates":861,"affiliates-caption":866,"contact":871,"contact-caption":876,"know-more":881},["null","t",606,"b",832],["null","t",608,"i",833,"s",835],[834],{"t":611},"Equipo",["null","t",606,"b",837],["null","t",608,"i",838,"s",840],[839],{"t":611},"Conoce nuestro equipo humano",["null","t",606,"b",842],["null","t",608,"i",843,"s",845],[844],{"t":611},"Certificaciones",["null","t",606,"b",847],["null","t",608,"i",848,"s",850],[849],{"t":611},"Preparados para tus necesidades",["null","t",606,"b",852],["null","t",608,"i",853,"s",855],[854],{"t":611},"Partners",["null","t",606,"b",857],["null","t",608,"i",858,"s",860],[859],{"t":611},"¿Quieres ser nuestro socio tecnológico?",["null","t",606,"b",862],["null","t",608,"i",863,"s",865],[864],{"t":611},"Plan de afiliados",["null","t",606,"b",867],["null","t",608,"i",868,"s",870],[869],{"t":611},"Obtén beneficios recomendando nuestros servicios",["null","t",606,"b",872],["null","t",608,"i",873,"s",875],[874],{"t":611},"Contacto",["null","t",606,"b",877],["null","t",608,"i",878,"s",880],[879],{"t":611},"¿Tienes alguna duda? Contacta con nosotros",["null","t",606,"b",882],["null","t",608,"i",883,"s",885],[884],{"t":611},"Agenda una reunión con nuestro equipo comercial",{"about":887,"support":892,"affiliates":897,"legal":901,"privacy":906,"terms":911,"cookies":916,"cookieSettings":921,"security":926},["null","t",606,"b",888],["null","t",608,"i",889,"s",891],[890],{"t":611},"Nosotros",["null","t",606,"b",893],["null","t",608,"i",894,"s",896],[895],{"t":611},"Soporte",["null","t",606,"b",898],["null","t",608,"i",899,"s",865],[900],{"t":611},["null","t",606,"b",902],["null","t",608,"i",903,"s",905],[904],{"t":611},"Aviso legal",["null","t",606,"b",907],["null","t",608,"i",908,"s",910],[909],{"t":611},"Políticas de privacidad",["null","t",606,"b",912],["null","t",608,"i",913,"s",915],[914],{"t":611},"Condiciones de contratación",["null","t",606,"b",917],["null","t",608,"i",918,"s",920],[919],{"t":611},"Política de cookies",["null","t",606,"b",922],["null","t",608,"i",923,"s",925],[924],{"t":611},"Configurar cookies",["null","t",606,"b",927],["null","t",608,"i",928,"s",930],[929],{"t":611},"Política de seguridad",{"breadcrumb":932,"header":937,"menu":1058,"footer":1141,"cta":1180,"blogPage":1206,"seo":1267,"root":1273,"menuOpts":1289,"soportePage":1321,"guidesPage":1328,"rdt1":1340},["null","t",606,"b",933],["null","t",608,"i",934,"s",936],[935],{"t":611},"Ruta de navegación",{"phone":938,"support":943,"chat":948,"account":953,"openMenu":958,"navLabel":963,"ctaShort":968,"viewAll":973,"top":981,"nav":1016,"sections":1052},["null","t",606,"b",939],["null","t",608,"i",940,"s",942],[941],{"t":611},"868 300 030",["null","t",606,"b",944],["null","t",608,"i",945,"s",947],[946],{"t":611},"Centro de soporte",["null","t",606,"b",949],["null","t",608,"i",950,"s",952],[951],{"t":611},"Abrir chat",["null","t",606,"b",954],["null","t",608,"i",955,"s",957],[956],{"t":611},"Área de cliente",["null","t",606,"b",959],["null","t",608,"i",960,"s",962],[961],{"t":611},"Abrir menú",["null","t",606,"b",964],["null","t",608,"i",965,"s",967],[966],{"t":611},"Navegación principal",["null","t",606,"b",969],["null","t",608,"i",970,"s",972],[971],{"t":611},"Contactar",["null","t",606,"b",974],["null","t",608,"i",975],[976,978],{"t":611,"v":977},"Ver todo ",{"t":979,"k":980},4,"family",{"label":982,"support":987,"datacenter":992,"ensAlt":997,"ens":1002,"supportLink":1007,"chat":1011},["null","t",606,"b",983],["null","t",608,"i",984,"s",986],[985],{"t":611},"Accesos rápidos",["null","t",606,"b",988],["null","t",608,"i",989,"s",991],[990],{"t":611},"Soporte humano 24\u002F7",["null","t",606,"b",993],["null","t",608,"i",994,"s",996],[995],{"t":611},"Centro de datos propio en Murcia",["null","t",606,"b",998],["null","t",608,"i",999,"s",1001],[1000],{"t":611},"Distintivo de certificación ENS de categoría alta",["null","t",606,"b",1003],["null","t",608,"i",1004,"s",1006],[1005],{"t":611},"ENS nivel alto",["null","t",606,"b",1008],["null","t",608,"i",1009,"s",896],[1010],{"t":611},["null","t",606,"b",1012],["null","t",608,"i",1013,"s",1015],[1014],{"t":611},"Chat",{"domains":1017,"hosting":1022,"cloud":1027,"servers":1032,"ia":1037,"services":1042,"company":1047},["null","t",606,"b",1018],["null","t",608,"i",1019,"s",1021],[1020],{"t":611},"Dominios",["null","t",606,"b",1023],["null","t",608,"i",1024,"s",1026],[1025],{"t":611},"Hosting",["null","t",606,"b",1028],["null","t",608,"i",1029,"s",1031],[1030],{"t":611},"Cloud",["null","t",606,"b",1033],["null","t",608,"i",1034,"s",1036],[1035],{"t":611},"Servidores",["null","t",606,"b",1038],["null","t",608,"i",1039,"s",1041],[1040],{"t":611},"IA",["null","t",606,"b",1043],["null","t",608,"i",1044,"s",1046],[1045],{"t":611},"Servicios",["null","t",606,"b",1048],["null","t",608,"i",1049,"s",1051],[1050],{"t":611},"Empresa",{"software":1053},["null","t",606,"b",1054],["null","t",608,"i",1055,"s",1057],[1056],{"t":611},"Software",{"featured":1059,"domain":1064,"hosting":1075,"cloud":1086,"servers":1097,"ia":1108,"services":1119,"company":1130},["null","t",606,"b",1060],["null","t",608,"i",1061,"s",1063],[1062],{"t":611},"Destacado",{"title":1065,"text":1070},["null","t",606,"b",1066],["null","t",608,"i",1067,"s",1069],[1068],{"t":611},"Tu nombre en internet",["null","t",606,"b",1071],["null","t",608,"i",1072,"s",1074],[1073],{"t":611},"Cientos de extensiones, DNS gestionable, SSL y antispam para tu correo.",{"title":1076,"text":1081},["null","t",606,"b",1077],["null","t",608,"i",1078,"s",1080],[1079],{"t":611},"Hosting con Plesk y NVMe",["null","t",606,"b",1082],["null","t",608,"i",1083,"s",1085],[1084],{"t":611},"Para webs, WordPress y tiendas online. CloudLinux, copias y soporte 24\u002F7\u002F365 incluidos.",{"title":1087,"text":1092},["null","t",606,"b",1088],["null","t",608,"i",1089,"s",1091],[1090],{"t":611},"Cloud VPS en España",["null","t",606,"b",1093],["null","t",608,"i",1094,"s",1096],[1095],{"t":611},"Recursos dedicados, IP propia y control total desde el panel NETLAN: reinicia, monitoriza y escala.",{"title":1098,"text":1103},["null","t",606,"b",1099],["null","t",608,"i",1100,"s",1102],[1101],{"t":611},"Servidores y housing",["null","t",606,"b",1104],["null","t",608,"i",1105,"s",1107],[1106],{"t":611},"Dedicados configurables o de stock, GPU NVIDIA para IA y housing en nuestro centro de datos de Murcia.",{"title":1109,"text":1114},["null","t",606,"b",1110],["null","t",608,"i",1111,"s",1113],[1112],{"t":611},"Infraestructura para IA",["null","t",606,"b",1115],["null","t",608,"i",1116,"s",1118],[1117],{"t":611},"Automatización con n8n, despliegues con Dokploy y GPU NVIDIA dedicada para inferencia local.",{"title":1120,"text":1125},["null","t",606,"b",1121],["null","t",608,"i",1122,"s",1124],[1123],{"t":611},"Que me lo gestionen",["null","t",606,"b",1126],["null","t",608,"i",1127,"s",1129],[1128],{"t":611},"Beeroot 360 y administración de sistemas: monitorización, parches e incidencias de la mano de nuestro NOC 24\u002F7.",{"title":1131,"text":1136},["null","t",606,"b",1132],["null","t",608,"i",1133,"s",1135],[1134],{"t":611},"Personas, no tickets",["null","t",606,"b",1137],["null","t",608,"i",1138,"s",1140],[1139],{"t":611},"Un equipo técnico en Murcia que conoce tu proyecto por su nombre.",{"tagline":1142,"phone":1147,"products":1152,"solutions":1157,"company":1162,"contact":1166,"address":1170,"social":1175},["null","t",606,"b",1143],["null","t",608,"i",1144,"s",1146],[1145],{"t":611},"Hosting, cloud y servidores con centro de datos propio en Murcia. Desde 2002 cuidando de lo que te importa.",["null","t",606,"b",1148],["null","t",608,"i",1149,"s",1151],[1150],{"t":611},"Teléfono 24\u002F7\u002F365",["null","t",606,"b",1153],["null","t",608,"i",1154,"s",1156],[1155],{"t":611},"Productos",["null","t",606,"b",1158],["null","t",608,"i",1159,"s",1161],[1160],{"t":611},"Soluciones",["null","t",606,"b",1163],["null","t",608,"i",1164,"s",1051],[1165],{"t":611},["null","t",606,"b",1167],["null","t",608,"i",1168,"s",875],[1169],{"t":611},["null","t",606,"b",1171],["null","t",608,"i",1172,"s",1174],[1173],{"t":611},"Alcantarilla, Región de Murcia (España)",["null","t",606,"b",1176],["null","t",608,"i",1177,"s",1179],[1178],{"t":611},"Síguenos",{"note":1181,"kicker":1186,"title":1191,"text":1196,"primary":1201},["null","t",606,"b",1182],["null","t",608,"i",1183,"s",1185],[1184],{"t":611},"Equipo técnico en Murcia, 24\u002F7\u002F365",["null","t",606,"b",1187],["null","t",608,"i",1188,"s",1190],[1189],{"t":611},"hablemos",["null","t",606,"b",1192],["null","t",608,"i",1193,"s",1195],[1194],{"t":611},"¿Hosting, VPS o servidor dedicado?",["null","t",606,"b",1197],["null","t",608,"i",1198,"s",1200],[1199],{"t":611},"Si dudas entre uno y otro, te ayudamos a elegir según tu proyecto, el tráfico que esperas y cuánto quieres administrar tú. La consulta no tiene coste y te responde una persona.",["null","t",606,"b",1202],["null","t",608,"i",1203,"s",1205],[1204],{"t":611},"Ayúdame a elegir",{"rss":1207,"kicker":1212,"breadcrumb":1216,"article":1226,"index":1261},["null","t",606,"b",1208],["null","t",608,"i",1209,"s",1211],[1210],{"t":611},"Blog de sys4net (RSS)",["null","t",606,"b",1213],["null","t",608,"i",1214,"s",612],[1215],{"t":611},{"home":1217,"blog":1222},["null","t",606,"b",1218],["null","t",608,"i",1219,"s",1221],[1220],{"t":611},"Inicio",["null","t",606,"b",1223],["null","t",608,"i",1224,"s",612],[1225],{"t":611},{"writtenBy":1227,"published":1232,"readingTime":1239,"related":1246,"table":1251,"tags":1256},["null","t",606,"b",1228],["null","t",608,"i",1229,"s",1231],[1230],{"t":611},"Por",["null","t",606,"b",1233],["null","t",608,"i",1234],[1235,1237],{"t":611,"v":1236},"Publicado el ",{"t":979,"k":1238},"fecha",["null","t",606,"b",1240],["null","t",608,"i",1241],[1242,1244],{"t":979,"k":1243},"n",{"t":611,"v":1245}," min de lectura",["null","t",606,"b",1247],["null","t",608,"i",1248,"s",1250],[1249],{"t":611},"Artículos relacionados",["null","t",606,"b",1252],["null","t",608,"i",1253,"s",1255],[1254],{"t":611},"Tabla: se puede desplazar en horizontal",["null","t",606,"b",1257],["null","t",608,"i",1258,"s",1260],[1259],{"t":611},"Etiquetas",{"read":1262},["null","t",606,"b",1263],["null","t",608,"i",1264,"s",1266],[1265],{"t":611},"Leer",{"ogImageAlt":1268},["null","t",606,"b",1269],["null","t",608,"i",1270,"s",1272],[1271],{"t":611},"sys4net — Hosting, Cloud y Servidores en España",{"devtools":1274},["null","sudo",1275,"work",1284],["null","t",606,"b",1276],["null","t",608,"i",1277],[1278,1280,1282],{"t":611,"v":1279},"¿Eres de los que abren las DevTools? Teclea ",{"t":979,"k":1281},"cmd",{"t":611,"v":1283}," en la web.",["null","t",606,"b",1285],["null","t",608,"i",1286,"s",1288],[1287],{"t":611},"¿Te gusta trastear? Trabaja con nosotros:",{"links":1290},{"plesk":1291,"pleskCaption":1296,"cloudlinux":1301,"cloudlinuxCaption":1306,"acronis":1311,"acronisCaption":1316},["null","t",606,"b",1292],["null","t",608,"i",1293,"s",1295],[1294],{"t":611},"Plesk",["null","t",606,"b",1297],["null","t",608,"i",1298,"s",1300],[1299],{"t":611},"El panel de control estándar del hosting, con licencias oficiales.",["null","t",606,"b",1302],["null","t",608,"i",1303,"s",1305],[1304],{"t":611},"CloudLinux",["null","t",606,"b",1307],["null","t",608,"i",1308,"s",1310],[1309],{"t":611},"Cada web aislada y con sus propios recursos garantizados.",["null","t",606,"b",1312],["null","t",608,"i",1313,"s",1315],[1314],{"t":611},"Acronis Cyber Protect",["null","t",606,"b",1317],["null","t",608,"i",1318,"s",1320],[1319],{"t":611},"Copias de seguridad y antimalware para equipos y servidores.",{"links":1322},{"label":1323},["null","t",606,"b",1324],["null","t",608,"i",1325,"s",1327],[1326],{"t":611},"sys4net.com\u002Fsoporte",{"toc":1329},{"toggle":1330,"title":1335},["null","t",606,"b",1331],["null","t",608,"i",1332,"s",1334],[1333],{"t":611},"Contenido de la guía",["null","t",606,"b",1336],["null","t",608,"i",1337,"s",1339],[1338],{"t":611},"En esta guía",{"site":1341},{"footer":1342},{"navLabel":1343,"ensLink":1348,"smeAlt":1353,"vatExcluded":1358,"vatAtCheckout":1363},["null","t",606,"b",1344],["null","t",608,"i",1345,"s",1347],[1346],{"t":611},"Footer",["null","t",606,"b",1349],["null","t",608,"i",1350,"s",1352],[1351],{"t":611},"Certificado ENS de categoría alta de sys4net (PDF)",["null","t",606,"b",1354],["null","t",608,"i",1355,"s",1357],[1356],{"t":611},"PYME innovadora",["null","t",606,"b",1359],["null","t",608,"i",1360,"s",1362],[1361],{"t":611},"Todos los precios mostrados en la web no incluyen el I.V.A.",["null","t",606,"b",1364],["null","t",608,"i",1365,"s",1367],[1366],{"t":611},"El I.V.A. se calcula al finalizar el pedido teniendo en cuenta su localización.",[],1794320560405]