microsoft.com
Live email deliverability and anti-spoofing audit. Every value below was read from public DNS at the moment this page was generated.
97/100 — This domain is configured correctly for both sending and receiving. Accepts mail · Protected against spoofing · Hosted by Microsoft 365
Findings
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mx redundancy
Only one mail exchanger is published, so there is no failover.
microsoft-com.mail.protection.outlook.com
Fix: Add a secondary MX at a higher priority number.
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mx
Mail is handled by Microsoft 365.
10 microsoft-com.mail.protection.outlook.com
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spf
SPF is published and enforcing.
v=spf1 include:_spf-a.microsoft.com include:_spf-b.microsoft.com include:_spf-c.microsoft.com include:_spf-ssg-a.msft.net include:_spf1-meo.microsoft.com -all
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dmarc
DMARC is enforcing with p=reject.
v=DMARC1; p=reject; pct=100; rua=mailto:itex-rua@microsoft.com; ruf=mailto:itex-ruf@microsoft.com; fo=1
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dkim
DKIM keys found for 1 selector.
selector2._domainkey
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mta sts
MTA-STS is published, so senders will refuse to downgrade to plaintext SMTP.
v=STSv1; id=20190225000000Z;
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tls rpt
TLS reporting is enabled.
v=TLSRPTv1;rua=https://tlsrpt.azurewebsites.net/report
Records
| MX | 10 microsoft-com.mail.protection.outlook.com |
|---|---|
| SPF | v=spf1 include:_spf-a.microsoft.com include:_spf-b.microsoft.com include:_spf-c.microsoft.com include:_spf-ssg-a.msft.net include:_spf1-meo.microsoft.com -all |
| DMARC | v=DMARC1; p=reject; pct=100; rua=mailto:itex-rua@microsoft.com; ruf=mailto:itex-ruf@microsoft.com; fo=1 |
| DKIM selectors | selector2 |
| MTA-STS | published |
| TLS-RPT | published |
| BIMI | not 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=microsoft.com"
Also available: /v1/verify?email=… for individual addresses, and
/v1/verify/batch for lists.