Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kh-freiburg.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 17:40:54 UTC · ↺ Refresh
MX Hostnames
- b2451.mx.srv.dfn.de
- a2451.mx.srv.dfn.de
- c2451.mx.srv.dfn.de
MX Priorities
- c2451.mx.srv.dfn.de: 100
- b2451.mx.srv.dfn.de: 20
- a2451.mx.srv.dfn.de: 20
A / AAAA Records
- 188.40.83.227 ↩ awhzds9.aufwind-solutions.de
Mail Server IPs
- 194.95.238.210 ↩ c2451.mx.srv.dfn.de
- 194.95.234.210 ↩ b2451.mx.srv.dfn.de
- 194.95.232.210 ↩ a2451.mx.srv.dfn.de
SOA Record
Raw SOA
docks15.rzone.de hostmaster.strato-rz.de 2020051357 86400 7200 604800 300
Primary NS (mname)
docks15.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020051357
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks15.rzone.de
shades13.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 a:kh-freiburg.de include:_spf.o245.mx.srv.dfn.de mx -all
📊 DNS lookups: 4/10
✓ 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
✗ None detectedNo 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
2 records- SPFv=spf1 a:kh-freiburg.de include:_spf.o245.mx.srv.dfn.de mx -all
- adobe-idp-site-verification=d8561217efda69c2168b51d9c86009fc3d37f51d39ce7b4e154166242ff2aca8
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