krefeld.de

Valid Email Server
Domain Lookup › krefeld.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
krefeld.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-29 00:45:03 UTC · ↺ Refresh

MX Hostnames

  • mail-in.as-scan.de
  • mx2.as-scan.de

MX Priorities

  • mx2.as-scan.de: 50
  • mail-in.as-scan.de: 30

A / AAAA Records

  • 194.77.238.183 ↩ revproxy-vip.krzn.de
  • 194.77.238.184 ↩ revproxy-vip.krzn.de

Mail Server IPs

  • 194.77.253.21 ↩ filter6.as-scan.de
  • 194.77.237.42 ↩ m18050688.krzn.de

SOA Record

Raw SOA dns.krzn.de joachim.krzn.de 2026022000 28800 7200 604800 3600
Primary NS (mname)
dns.krzn.de
Admin Email (rname)
joachim@krzn.de
Serial
2026022000
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

secondary004.dtag.net
pns.dtag.de
dns.krzn.de

SPF Record

✓ Soft Fail (~all)
v=spf1 mx a ptr ip4:194.77.253.0/24 ip4:194.77.250.0/24 ip4:194.77.237.0/24 ip4:194.77.241.0/24 ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected],mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]

DKIM Selectors

✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail

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

All TXT Records

6 records
  • SPFv=spf1 mx a ptr ip4:194.77.253.0/24 ip4:194.77.250.0/24 ip4:194.77.237.0/24 ip4:194.77.241.0/24 ~all
  • _telesec-domain-validation=344955_2025-09-11_XCLzMQ0Dugdd6QHkzXQjSdQkcT7HKlC5fLy3m8isTiZ9t64iFP
  • apple-domain-verification=eSU0K0GDdP78J0UT
  • MS=C25C09B8FE055379C968A40972EEE703556ABB93
  • brevo-code:1fa54aeb21e18b6bc222807eafcc5de7
  • cisco-ci-domain-verification=54b6c1b814873f98409b10d738377d98516a17826243c323e791062bd61d3f39
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