openai.com
Live email deliverability and anti-spoofing audit. Every value below was read from public DNS at the moment this page was generated.
96/100 — This domain is configured correctly for both sending and receiving. Accepts mail · Protected against spoofing · Hosted by Google Workspace
Findings
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mta sts
No MTA-STS policy, so inbound mail can be downgraded to an unencrypted connection.
Fix: Publish _mta-sts.openai.com and host a policy at https://mta-sts.openai.com/.well-known/mta-sts.txt.
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mx
Mail is handled by Google Workspace.
1 aspmx.l.google.com, 5 alt1.aspmx.l.google.com, 5 alt2.aspmx.l.google.com, 10 alt3.aspmx.l.google.com, 10 alt4.aspmx.l.google.com
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spf
SPF is published and enforcing.
v=spf1 include:_spf.google.com include:spf.protection.outlook.com include:8050860.spf04.hubspotemail.net include:mktomail.com include:spf_c.oraclecloud.com -all
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dmarc
DMARC is enforcing with p=reject.
v=DMARC1; p=reject; rua=mailto:tdfyvl0n@ag.dmarcian.com; ruf=mailto:tdfyvl0n@fr.dmarcian.com; fo=1; aspf=r
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dkim
DKIM keys found for 4 selectors.
google._domainkey, selector1._domainkey, s1._domainkey, s2._domainkey
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bimi
BIMI is published; supporting clients can show your logo.
v=BIMI1;l=https://openai.com/.well-known/bimi/openai_opco_llc_1462268336.svg;a=https://openai.com/.well-known/bimi/openai_opco_llc_1462268336.pem
Records
| MX | 1 aspmx.l.google.com5 alt1.aspmx.l.google.com5 alt2.aspmx.l.google.com10 alt3.aspmx.l.google.com10 alt4.aspmx.l.google.com |
|---|---|
| SPF | v=spf1 include:_spf.google.com include:spf.protection.outlook.com include:8050860.spf04.hubspotemail.net include:mktomail.com include:spf_c.oraclecloud.com -all |
| DMARC | v=DMARC1; p=reject; rua=mailto:tdfyvl0n@ag.dmarcian.com; ruf=mailto:tdfyvl0n@fr.dmarcian.com; fo=1; aspf=r |
| DKIM selectors | google, selector1, s1, s2 |
| MTA-STS | not published |
| TLS-RPT | not published |
| BIMI | published |
| DNSSEC | not validating |
Same data, as JSON, in one request. No SMTP probing, no stored recipient data, 250 free calls a month.
curl "https://mailgrade.dev/v1/domain?domain=openai.com"
Also available: /v1/verify?email=… for individual addresses, and
/v1/verify/batch for lists.