jfb.de

Valid Email Server
Domain Lookup › jfb.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
jfb.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-02 22:07:34 UTC · ↺ Refresh

MX Hostnames

  • mail.jfb.de
  • harold.3des.de
  • relay.rzone.de

MX Priorities

  • relay.rzone.de: 100
  • harold.3des.de: 20
  • mail.jfb.de: 10

A / AAAA Records

  • 45.132.245.22 ↩ mail.3des.de
  • fe80::a8ec:d8ff:fe3f:2b30 (no PTR)

Mail Server IPs

  • 81.169.145.96 ↩ relay.rzone.de
  • 37.120.187.152 ↩ harold.3des.de
  • 45.132.245.22 ↩ mail.3des.de

SOA Record

Raw SOA shades19.rzone.de hostmaster.strato-rz.de 2020052043 86400 7200 604800 300
Primary NS (mname)
shades19.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020052043
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

shades19.rzone.de
docks13.rzone.de

SPF Record

✓ Strict (-all)
v=spf1 mx -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;pct=100; rua=mailto:[email protected]; adkim=r;aspf=r;fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No 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 mx -all
  • google-site-verification=B3Z-CYVoEiUgi2P3CHJDMnjwSgfI82aYfQhrJ8wQjGc
Full email verification for jfb.de

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