MX lookup

Find the mail servers and likely email provider behind a domain.

What does a green check mean?

A relevant record was found without the common issues checked here. It does not guarantee inbox placement, a working mail server or successful authentication of every email.

Why can DKIM show a question mark?

DKIM keys live under selectors chosen by your provider. Without one, there is no reliable way to list every key. Check the selector used in a recent sent email.

References: SPF (RFC 7208), DKIM (RFC 6376), DMARC (RFC 9989). DNS answers can differ while changes propagate.

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