Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zirbus.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 00:21:05 UTC · ↺ Refresh
MX Hostnames
- mail.zirbus.de
MX Priorities
- mail.zirbus.de: 10
A / AAAA Records
- 91.198.21.70 ↩ rz-r70.hoehne-ag.de
Mail Server IPs
- 91.198.21.70 ↩ rz-r70.hoehne-ag.de
SOA Record
Raw SOA
ns3.hoehne-ag.de root.ns3.hoehne-ag.de 1771252061 10800 3600 604800 3600
Primary NS (mname)
ns3.hoehne-ag.de
Admin Email (rname)
root@ns3.hoehne-ag.de
Serial
1771252061
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns9.hoehne-ag.de
ns3.hoehne-ag.de
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:91.198.21.0/24 ip4:51.116.174.0/24 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo 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 a mx ip4:91.198.21.0/24 ip4:51.116.174.0/24 -all
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