Ensure your email authentication is properly configured with our comprehensive DKIM record validator. Enter your domain details below to analyse DNS records, confirm cryptographic keys are published correctly, and identify potential deliverability issues before they impact your email campaigns.
Quick validation process: Simply provide your domain name and selector to receive detailed analysis of your DKIM configuration within seconds.
DomainKeys Identified Mail (DKIM) serves as a digital signature system that proves email authenticity. When you send messages, your mail server applies a cryptographic signature using a private key. Recipients then verify this signature against the public key stored in your DNS records.
This authentication method prevents email tampering during transmission and confirms that messages originated from authorised senders within your organisation. Properly implemented DKIM significantly improves inbox delivery rates and builds trust with receiving mail servers.
Regular validation of your DKIM setup becomes essential in several situations:
Our validator performs comprehensive DNS queries to locate and analyse your DKIM records. The tool searches for TXT records at the specific hostname pattern: {selector}._domainkey.{yourdomain}.
Once located, we parse the record contents to verify:
Results are presented in a clear, readable format that highlights any configuration issues requiring attention.
Selector identification challenges: Your email service provider typically displays the required selector within their DKIM configuration interface. Popular selectors include terms like 'google', 'default', 'mail', or automatically generated strings.
Missing record errors: When validation fails, common causes include incorrect selector values, DNS records published to inactive nameservers, or records created with improper hostname formatting.
Multiple selector management: Domains can maintain several DKIM selectors simultaneously, enabling key rotation, provider diversity, or staged migrations without service interruption.
Key length considerations: While 2048-bit keys offer enhanced security, some platforms still utilise 1024-bit keys due to technical constraints. Follow your provider's specific recommendations.
Authentication failures despite valid records: Even with correct DNS entries, DKIM can fail due to selector mismatches, DNS caching delays, incomplete provider configuration, or signing from unexpected domains.
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