DKIM & DMARC Checker
DKIM (DomainKeys Identified Mail) Checker
DKIM is an email authentication method designed to detect forged sender addresses in emails.
The DKIM selector is a specific text string added to the domain name that helps identify which public key to use for verification. Common selectors include "k1", "mail", "s1", etc.
DMARC (Domain-based Message Authentication, Reporting, and Conformance) Checker
DMARC is an email authentication protocol that builds on SPF and DKIM to provide domain-level protection against email spoofing.
DMARC records are published at _dmarc.yourdomain.com. If no record is found, email receivers will apply their default policies which may result in your emails being marked as spam or rejected.
About Email Authentication
Email authentication protocols like DKIM and DMARC help prevent email spoofing and phishing attacks by verifying that the email was actually sent by the domain it claims to be from.
- DKIM adds a digital signature to your emails that can be verified by receivers using a public key published in your DNS.
- DMARC tells receiving servers what to do with emails that fail SPF or DKIM checks, and provides reporting mechanisms.
- Implementation of both protocols significantly improves email deliverability and security.