How can I perform a DKIM lookup for my domain to verify my email authentication?
To perform a DKIM lookup for your domain and verify email authentication, extract the DKIM selector from a signed message’s header, build the DNS name as selector._domainkey.yourdomain, query its TXT record with dig/nslookup (or an API), interpret the key tags, and optionally validate a message’s DKIM-Signature against that published public key. Context and background DKIM…
