Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
stbknuehmann.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 16:45:52 UTC · ↺ Refresh
MX Hostnames
- stbknuehmann-de.mail.protection.outlook.com
MX Priorities
- stbknuehmann-de.mail.protection.outlook.com: 10
A / AAAA Records
- 217.160.0.131 ↩ 217-160-0-131.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::200 ↩ 2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com
Mail Server IPs
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
SOA Record
Raw SOA
shades20.rzone.de hostmaster.strato-rz.de 2020050807 86400 7200 604800 300
Primary NS (mname)
shades20.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020050807
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks19.rzone.de
shades20.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
2 records- SPFv=spf1 include:spf.protection.outlook.com -all
- MS=ms98088377
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