Email DNS check

Email DNS

Use your mail provider's exact MX and authentication values. Keep one SPF policy per name; combine authorized senders in that policy rather than publishing a second one. DKIM selectors come from the mail provider, not from the domain name.

Record discovery does not test a mailbox or validate a message signature. Sources: SPF, DMARC, Null MX. Lookups use Cloudflare's public DNS resolver.