Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
guenterkratzer.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 15:57:39 UTC · ↺ Refresh
MX Hostnames
- srv1.oliverkratzer.de
MX Priorities
- srv1.oliverkratzer.de: 10
A / AAAA Records
- 138.201.173.69 ↩ srv1.oliverkratzer.de
- 2a01:4f8:c17:4f0c::2 (no PTR)
Mail Server IPs
- 138.201.173.69 ↩ srv1.oliverkratzer.de
- 2a01:4f8:c17:4f0c::2 (no PTR)
SOA Record
Raw SOA
ns1.first-ns.de dns.hetzner.com 2026021600 14400 1800 604800 1800
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
dns@hetzner.com
Serial
2026021600
Refresh
14400s
Retry
1800s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns1.first-ns.de
robotns2.second-ns.de
robotns3.second-ns.com
SPF Record
✓ Strict (-all)
v=spf1 mx include:srv1.oliverkratzer.de -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; adkim=r; fo=1; pct=20; ri=3600; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
⚠ Policy applies to 20% of failing messages only
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 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
2 records- SPFv=spf1 mx include:srv1.oliverkratzer.de -all
- google-site-verification=zJWP1swJQl3K6frcSIqMj-nR_PF1iGc8kIOKcBaNe5s
Full email verification for guenterkratzer.de
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