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Checking SPF, DMARC, DKIM, MX, DNS, blacklists and domain & SSL expiry. A domain we haven't scanned before takes a few seconds — hang tight.
Checking SPF, DMARC, DKIM, MX, DNS, blacklists and domain & SSL expiry. A domain we haven't scanned before takes a few seconds — hang tight.
Scanned Jul 7, 2026 12:32 UTC · 7 checks · public report
Solid base — one policy step remains.
github.com publishes an enforcing DMARC policy, so mail that forges its domain is quarantined or rejected at the recipient.
v=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblocks.google.com include:_netblocks2.google.com include:mail.zendesk.com include:_spf.salesforce.com include:servers.mcsv.net include:mktomail.com include:sendgrid.net ip4:62.253.227.114 ip4:166.78.69.169 ip4:166.78.69.170 ip4:166.78.71.131 ~allOne send: the full report — every finding and fix — lands in your inbox, with a free account waiting. Opening it signs you in and starts a 14-day Monitor trial. No card, and you can unsubscribe in one click.
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