Domain Overview
DNS: ✓ 20d ago
Checker: ✓ 20d ago
stelterbrinck.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 10:49:45 UTC · ↺ Refresh
MX Hostnames
- stelterbrinck-com.mail.protection.outlook.com
MX Priorities
- stelterbrinck-com.mail.protection.outlook.com: 10
A / AAAA Records
- 160.153.0.197 ↩ 197.0.153.160.host.secureserver.net
Mail Server IPs
- 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
- 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
- 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
- 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
- 2a01:111:f403:f909:: ↩ mail-bn6pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f802::2 ↩ mail-sj2pr05cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f802:: ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
ns71.worldnic.com namehost.worldnic.com 126021210 10800 3600 604800 3600
Primary NS (mname)
ns71.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126021210
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns71.worldnic.com
ns72.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.mlsend.com ip4:66.117.249.82 include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1:d:s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
8 records- SPFv=spf1 include:_spf.mlsend.com ip4:66.117.249.82 include:spf.protection.outlook.com -all
- pmf3isgpca8f14p76dlmu8uj0q
- MS=ms85647944
- r36k6n28bnjg8s3uar2mehj95
- google-site-verification=gaaphVsWlSz0ncD1yFmD7p1lTB8KVyWH-7wM-0pZsb4
- google-site-verification=vpitMhhh7C9_2KndFXV98aaQKDv9Fg39FO6GKycKDds
- openai-domain-verification=dv-jUM4FdFUs411ZhdnZu354Yq9
- 5c8qioui3t2mbe9g1qspoudobv
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