MailGate › github.com

Email authentication report for github.com

Resolved live from public DNS. Cached up to 6 hours — re-run it now for a fresh result.

A deliverability score 90/100

SPF	`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 ~all`
DMARC	`v=DMARC1; p=quarantine; sp=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1`
DKIM	`google._domainkey` (Google Workspace) `selector1._domainkey` (Microsoft 365) `k1._domainkey` (Mailchimp/Mandrill) `k2._domainkey` (Mailchimp) `s1._domainkey` (Zoho/generic) `s2._domainkey` (Zoho/generic)
MX	0 `github-com.mail.protection.outlook.com`

What to fix

SPF uses ~9 of the 10 allowed DNS lookups — you are one vendor away from breaking it.

SPF record published

SPF ends in ~all (soft fail)

DMARC record published

DMARC policy p=quarantine

DMARC aggregate reports (rua) are being collected

DKIM key found: google, selector1, k1, k2, s1, s2

1 MX host(s) configured

MailGate Pro runs the same audit on up to 100 domains at once and exports CSV — built for agencies, MSPs and anyone migrating a mail platform.

MailGate — free SPF, DKIM & DMARC checker. Check any domain →