b-treu.de

Valid Email Server
Domain Lookup › b-treu.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
b-treu.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 08:57:38 UTC · ↺ Refresh

MX Hostnames

  • server.b-treu.de

MX Priorities

  • server.b-treu.de: 10

A / AAAA Records

  • 81.169.145.84 ↩ w84.rzone.de
  • 2a01:238:20a:202:1084:: ↩ w84.rzone.de

Mail Server IPs

  • 80.153.203.219 ↩ server.b-treu.de

SOA Record

Raw SOA shades06.rzone.de hostmaster.strato-rz.de 2023070827 86400 7200 604800 300
Primary NS (mname)
shades06.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2023070827
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

shades06.rzone.de
docks13.rzone.de

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:80.153.203.219 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; pct=20; rua=mailto:[email protected]; adkim=r; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 20% of failing messages only

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

1 record
  • SPFv=spf1 mx ip4:80.153.203.219 -all
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