SPF and DMARC check
See the SPF, DMARC, and DKIM records a domain publishes, then the MX servers that receive its mail.
SPF lists the servers allowed to send mail for a domain. DMARC tells receivers what to do when a message fails SPF or DKIM, and where to send reports. DKIM is a public key that signs outbound mail.
This check looks for SPF on the domain, DMARC at _dmarc, and DKIM on the selectors default, google, selector1, s1, and k1. A custom selector will not appear until you look it up in your mail host.
SPF and DMARC check FAQ
What is a passing SPF check?
A TXT record that starts with v=spf1. The page shows the record. It does not send a test message.
Where is DMARC?
On the host _dmarc, as a TXT record that starts with v=DMARC1.
Why is DKIM empty when mail is signed?
The selector may not be one of the common names we try. Copy the selector from your mail host and check that host directly.
