krumholz.de

Valid Email Server
Domain Lookup › krumholz.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
krumholz.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 09:08:26 UTC · ↺ Refresh

MX Hostnames

  • news-krumholz-de.mail.protection.outlook.com
  • krumholz-de.mail.protection.outlook.com

MX Priorities

  • news-krumholz-de.mail.protection.outlook.com: 0
  • krumholz-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 188.138.66.222

Mail Server IPs

  • 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
  • 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
  • 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
  • 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
  • 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
  • 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 52.101.73.15
  • 52.101.68.10
  • 2a01:111:f403:ca09::3
  • 2a01:111:f403:ca09::6
  • 2a01:111:f403:ca04::b
  • 2a01:111:f403:ca04::f

SOA Record

Raw SOA ns-a.ktk.de hostmaster.noc.ktk.de 2019052136 3600 900 604800 3600
Primary NS (mname)
ns-a.ktk.de
Admin Email (rname)
hostmaster@noc.ktk.de
Serial
2019052136
Refresh
3600s
Retry
900s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns-a.ktk.de
ns-c.ktk.de
ns-b.ktk.io

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • 6144f779bf9a7f86099830e942421a1068839102603eed85b5c9afd37198451b
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms39169118
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