Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
singleron.bio
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 08:38:20 UTC · ↺ Refresh
MX Hostnames
- singleron-bio.mail.protection.outlook.com
MX Priorities
- singleron-bio.mail.protection.outlook.com: 0
A / AAAA Records
- 92.205.3.167 ↩ 167.3.205.92.host.secureserver.net
Mail Server IPs
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
jimmy.ns.cloudflare.com dns.cloudflare.com 2400511391 10000 2400 604800 1800
Primary NS (mname)
jimmy.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400511391
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
jimmy.ns.cloudflare.com
uma.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; sp=quarantine; pct=100; ri=86400; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- SPFv=spf1 include:spf.protection.outlook.com -all
- MS=ms45049661
- google-site-verification=MtZGswvWNG1L93HI79eWuqmsRvB4DcZSU1Dn6ciNPlE
- google-site-verification=b1FH7S-dQbs2VI9zJ9B0FP2gFHUzBNYhg6LsOovB9Kg
- sendinblue-code:8e9443ed681aabda1499b44fc186c5a0
- DMARCv=DMARC1; p=reject; pct=100; ruf=mailto:[email protected]
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