---
title: "Búsqueda y auto-descubrimiento gratuito de registros DKIM | DMARC Report"
description: "Descubra todos los registros DKIM para cualquier dominio. Escanee automáticamente más de 50 selectores comunes para encontrar SendGrid, Google Workspace, Microsoft 365, Mailchimp y más de 100 proveedores - o busque un selector específico."
image: "https://dmarcreport.com/images/og-default.png"
canonical: "https://dmarcreport.com/es/tools/dkim-lookup/"
---

## ¿Qué es un registro DKIM?

Un registro DKIM (Correo Identificado por Claves de Dominio) es una entrada DNS que permite a los remitentes de correo electrónico firmar los mensajes salientes con una firma criptográfica única. Esta firma actúa como una huella digital, permitiendo a los destinatarios verificar que un correo realmente se originó del dominio declarado y no ha sido alterado en tránsito.

Piense en ello como recibir una carta sellada con un sello de cera - el sello indica que la carta es auténtica y no ha sido manipulada durante su recorrido. A partir de 2023, aproximadamente el 80% de las empresas Fortune 500 usan DKIM para asegurar sus comunicaciones por correo electrónico.

## Cómo funciona la autenticación DKIM

1 

### Generar par de claves

Un inspector DKIM descubre los selectores DKIM existentes y las claves públicas (mantenidas en secreto en su servidor de correo) y una clave pública (publicada en su DNS).

2 

### Firmar correos salientes

Su servidor de correo usa la clave privada para crear una firma cifrada única para cada correo saliente, agregada al encabezado.

3 

### Verificar al recibir

El servidor receptor recupera su clave pública del DNS y verifica la firma. Si coincide, el correo es de confianza.

## Problemas comunes de DKIM

### Registros DNS mal configurados

Errores tipográficos o entradas incorrectas en los registros TXT son la causa más común. Verifique que no falten comillas y que el formato sea correcto.

### Desajuste de selector

Asegúrese de que el selector configurado en su servidor de correo coincida exactamente con lo que está en su registro DNS. Incluso las discrepancias menores causan fallos.

### Incompatibilidad de longitud de clave

Los estándares de seguridad modernos recomiendan claves de 2048 bits. Si está usando un sistema más antiguo, verifique que admita la longitud de clave elegida.

### Retrasos en la propagación DNS

Después de realizar cambios DNS, espere varias horas para la propagación antes de probar. Los cambios no surten efecto instantáneamente en todos los servidores de nombres.

## DKIM es solo una pieza del rompecabezas

DMARC Report monitorea la alineación de DKIM, SPF y DMARC juntos - dándole una imagen completa de la salud de autenticación de su correo electrónico.

[Prueba gratuita](https://app.dmarcreport.com/login)

## Herramientas simples y efectivas

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DG

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Owner

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AL

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ZK

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Director

5/5

### "Essential tool for email delivery"

This tool helps us to implement DMARC reporting for our domains in an easy to use manner.

8/8/2024Verified on G2

[Read all 469 reviews on G2 →](https://www.g2.com/products/dmarc-report/reviews)

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