github.com email records

What github.com publishes in public DNS for SPF, DKIM, DMARC, MX and BIMI, resolved on 2026-08-04.

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

The record authorises these sending platforms: Microsoft 365, Zendesk, Salesforce (Sales & Service Cloud), Mailchimp, Adobe Marketo Engage, Twilio SendGrid.

DMARC

v=DMARC1; p=quarantine; sp=reject; pct=100; rua=mailto:dmarc@github.com; ruf=mailto:dmarc@github.com; fo=1

policy

p=quarantine

subdomains

sp=reject

applies to

100% of mail

reports

mailto:dmarc@github.com

alignment

adkim=r, aspf=r

DKIM

Keys found on 4 of 10 probed selectors:

MX

Notes on this configuration

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The above is a snapshot from 2026-08-04. Re-resolve it now:

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