outlook.com
Good, with 1 thing to fix
outlook.com scored 85/100 (grade B). The main issue is DMARC policy is none. Detected senders: Microsoft 365.
Checked 2026-10-04 02:03 UTC · fresh check
Strengthen the DMARC policy
Quarantines all mail that fails DMARC. Move on to reject once the reports stay clean. Changes: pct applies to sp as well, so a pct=25 ramp would enforce sp=quarantine on only a quarter of subdomain mail. The ramp is skipped to keep subdomains fully protected; p moves to quarantine directly.
_dmarc.outlook.com
Some DNS providers want just “_dmarc” here.
v=DMARC1; p=quarantine; rua=mailto:rua@dmarc.microsoft; adkim=r; aspf=r
v=DMARC1; p=none; sp=quarantine; pct=100; rua=mailto:rua@dmarc.microsoft; ruf=mailto:ruf@dmarc.microsoft; fo=1
How to apply it
- Sign in where your domain’s DNS is managed. This is often where you bought the domain, such as Cloudflare, GoDaddy or Namecheap.
- Find the existing TXT record with that name and replace its value.
- Save, then come back and re-check. DNS changes can take up to a few hours to show.
All checks
MXCan servers find your inbox?Only one MX hostInfo
- Info: Only one MX host
All mail for outlook.com goes to outlook-com.olc.protection.outlook.com. Most hosted providers make that one name highly available; if you run your own server, consider a backup MX.
SPFWho may send as you?No issues foundPass
Nothing to report.
DKIMAre your emails signed?DKIM key publishedPass
- Pass: DKIM key published
outlook.com publishes a DKIM key under selector1, selector2.
DMARCWhat happens to fakes?DMARC policy is noneNeeds attention
- Warning: DMARC policy is none
A none policy only monitors: mail that fails DMARC is still delivered, so anyone can spoof the domain. Once reports show your legitimate senders pass, move to quarantine and then reject.
How to fix this
AlignmentDoes it match your From?No issues foundPass
Nothing to report.
BIMICan inboxes show your logo?No BIMI recordInfo
- Info: No BIMI record
No BIMI record at default._bimi.outlook.com. BIMI is optional: it shows your logo next to your mail in supporting inboxes once DMARC is enforced.
How to fix this
MTA-STSIs mail to you encrypted?No issues foundPass
Nothing to report.
TLS-RPTWill you hear about failures?TLS-RPT is configuredPass
- Pass: TLS-RPT is configured
TLS reports will be sent to https://tlsrpt.azurewebsites.net/report.
Other fixes
Prepare BIMIinstruction
BIMI shows your logo next to messages in supporting inboxes, but only for mail that passes DMARC under an enforced policy.
Applies to: default._bimi.outlook.com
- Enforce DMARC first: p=quarantine or p=reject at 100% (no pct below 100). 2. Convert your logo to an SVG Tiny PS file and host it over HTTPS, for example https://outlook.com/bimi/logo.svg. 3. For Gmail and Apple Mail, obtain a VMC or CMC certificate for the logo. 4. Publish a TXT record at default._bimi.outlook.com with v=BIMI1, l= set to the logo URL and a= set to the certificate URL.