Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zahnarztpraxis-kaessner.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 22:52:13 UTC · ↺ Refresh
MX Hostnames
- zahnarztpraxis-kaessner.de
MX Priorities
- zahnarztpraxis-kaessner.de: 10
A / AAAA Records
- 148.251.126.207 ↩ hwt04.de
- 2a01:4f8:210:2201::2 ↩ hwt04.de
Mail Server IPs
- 148.251.126.207 ↩ hwt04.de
- 2a01:4f8:210:2201::2 ↩ hwt04.de
SOA Record
Raw SOA
ns1.first-ns.de post.zahnarztpraxis-kaessner.de 2026031102 3600 3600 1209600 3600
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
post@zahnarztpraxis-kaessner.de
Serial
2026031102
Refresh
3600s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
robotns3.second-ns.com
ns1.first-ns.de
robotns2.second-ns.de
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a a:hwt04.de ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx a a:hwt04.de ~all
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