Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
f-niemann.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 06:10:30 UTC · ↺ Refresh
MX Hostnames
- fniemann-de0c.mail.protection.outlook.com
MX Priorities
- fniemann-de0c.mail.protection.outlook.com: 20
A / AAAA Records
- 157.90.142.114 ↩ server4.f-niemann.splendid-hosting.de
- 2a01:4f8:2220:388d::2 ↩ server4.f-niemann.splendid-hosting.de
Mail Server IPs
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
docks18.rzone.de hostmaster.strato-rz.de 2020051023 86400 7200 604800 300
Primary NS (mname)
docks18.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020051023
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks18.rzone.de
shades14.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 a a:mail.f-niemann.de a:mx01.f-niemann.de a:mx02.f-niemann.de ip4:217.86.241.53 ip4:217.86.157.64 include:spf.protection.outlook.com include:a._spf.sitepackage.de include:b._spf.sitepackage.de include:spf.sendinblue.com -all
📊 DNS lookups: 9/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=0:1:d:s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
4 records- bw=qdsMsUsv81sTHebEVCcCr1D9qlsLxxR9WyDMC9ASNajR
- apple-domain-verification=2EZQmIn0Y7iyTiNw
- brevo-code:7fb8cea0cc037e73824971d99c533210
- SPFv=spf1 a a:mail.f-niemann.de a:mx01.f-niemann.de a:mx02.f-niemann.de ip4:217.86.241.53 ip4:217.86.157.64 include:spf.protection.outlook.com include:a._spf.sitepackage.de include:b._spf.sitepackage.de include:spf.sendinblue.com -all
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