SPF, DKIM, DMARC Security Tool
Check your domain's email security configuration to ensure proper SPF, DKIM, and DMARC records are in place.
SPF, DKIM, and DMARC
The big 3 pieces of DNS-based email authentication are: SPF, DKIM, and DMARC. Each one is a DNS TXT record. Email recipients can use these to verify that emails were authorized by the domain owner.
If these DNS records are configured correctly (or not configured at all), email recipients do not know how to verify if emails are authorized by the domain owner. Emails may not be delivered or worse an attacker could spoof emails from the domain.
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