knappschaft-kliniken.de

Valid Email Server
Domain Lookup › knappschaft-kliniken.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
knappschaft-kliniken.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 02:29:44 UTC · ↺ Refresh

MX Hostnames

  • mailext02.knappschaft-kliniken.de
  • mailext01.knappschaft-kliniken.de

MX Priorities

  • mailext02.knappschaft-kliniken.de: 20
  • mailext01.knappschaft-kliniken.de: 10

A / AAAA Records

  • 212.23.140.221 (no PTR)

Mail Server IPs

  • 212.23.143.116 ↩ mailext02.knappschaft-kliniken.de
  • 212.23.143.115 ↩ mailext01.knappschaft-kliniken.de

SOA Record

Raw SOA adns01.de.tmr.net hostmaster.knappschaft-kliniken.de 1773608614 10800 1800 604800 3600
Primary NS (mname)
adns01.de.tmr.net
Admin Email (rname)
hostmaster@knappschaft-kliniken.de
Serial
1773608614
Refresh
10800s
Retry
1800s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

adns01.de.tmr.net
adns02.de.tmr.net

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:212.23.143.115 ip4:212.23.143.116 ip4:212.23.143.117 -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

✓ 1 found
s1._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1

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

All TXT Records

5 records
  • _3h5eno9pjsr1f4kee635fxjklp54t8o
  • SPFv=spf1 mx ip4:212.23.143.115 ip4:212.23.143.116 ip4:212.23.143.117 -all
  • apple-domain-verification=LAy7ZgM8NyP9Xu4t
  • cisco-ci-domain-verification=65583c7d484d6d2a36423e0eccb38e2eb2bfc5f86ae375a1a7fc18b6f07d72a4
  • _tmpc18tn6f0c96zuzgqnrdr5dwnuwwm
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