Check Your DKIM Record
Verify your DKIM records and test common selectors for your domain.
DKIM (DomainKeys Identified Mail) adds a cryptographic signature to your outgoing emails, proving they haven't been tampered with in transit. A missing or weak DKIM key can cause authentication failures and reduce trust with receiving servers. Check your DKIM selector to verify your key is valid and strong enough.
DKIM key validation & strength check
Auto-detect common selectors
Key type & length analysis