rsbf.de

Valid Email Server
Domain Lookup › rsbf.de

Domain Overview

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

Checked via [email protected] · 2026-04-04 15:28:16 UTC · ↺ Refresh

MX Hostnames

  • mx.schmetterling-argus.de

MX Priorities

  • mx.schmetterling-argus.de: 10

A / AAAA Records

  • 213.95.81.32 (no PTR)

Mail Server IPs

  • 213.95.81.224 ↩ mx.schmetterling-argus.de

SOA Record

Raw SOA ns01.schmetterling.de domain.schmetterling.de 2024061000 43200 7200 1209600 86400
Primary NS (mname)
ns01.schmetterling.de
Admin Email (rname)
domain@schmetterling.de
Serial
2024061000
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns03.schmetterling.de
ns02.schmetterling.de
ns01.schmetterling.de
ns04.schmetterling.de

SPF Record

✓ Strict (-all)
v=spf1 mx include:schmetterling-argus.de -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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 include:schmetterling-argus.de -all
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