microsoftonline.com
Number 35 of the Top 100 · Tranco rank 39
microsoftonline.com is where work and school Microsoft accounts sign in. login.microsoftonline.com is the sign-in page of Microsoft Entra ID, used by Microsoft 365, Teams and Azure, which is also why phishing pages copy it so often.
Can microsoftonline.com be forged?
Can microsoftonline.com be forged?
No. Receivers that check DMARC refuse mail that forges microsoftonline.com or its subdomains.
- The exact name
- reject · subdomains reject · no reports asked for
- Names that copy
- 79 registered lookalikes can send mail. DMARC never sees them. See them →
What we noticed
- No DKIM selector answered, so the mail of the domain carries no signature.
Senders it names Microsoft 365
- Microsoft 365 include:spf.protection.outlook.com
- Microsoft 365 runs its mail hosts
These are the services the records name. A record can name a service no longer used, and a sender can sign without being named.
SPF-all · 6 of 10 lookups · 459 thousand addresses
Refuses others · 6 of 10 lookups · 0 of 2 void lookups · 458,952 IPv4 addresses · 5 IPv6 blocks · Includes of its senders
Every term and include
DKIM0 keys found
We look under the selectors of the services the records name. A domain can have keys we do not find.
Sending names 1 name, 1 at reject
| Name | Policy | SPF lookups | Reports to |
|---|---|---|---|
| www.microsoftonline.com | reject (inherited) | 6 | — |
The first 50 names are checked.
ReportsNo reports asked for
Aggregate reports (rua) go to mailto:rua@dmarc.microsoft. Failure reports (ruf) are asked for.
Transport MTA-STS none · TLS-RPT none · BIMI none
MTA-STS asks senders to deliver to microsoftonline.com over encrypted connections only. TLS-RPT asks for reports when they cannot. BIMI shows a logo beside mail that passes DMARC at quarantine or reject.
Read on Oct 28, 2026. Check it again yourself →
Watch your own domain's mail this way: Sender Security · the DMARC Report