Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
port-x.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-04 14:43:22 UTC · ↺ Refresh
MX Hostnames
- mailgate1.port-x.de
- mailgate2.port-x.de
MX Priorities
- mailgate1.port-x.de: 10
- mailgate2.port-x.de: 50
A / AAAA Records
- 212.21.69.101 ↩ www.port-x.de
Mail Server IPs
- 212.21.68.43 ↩ mailgate1.port-x.de
- 212.21.68.44 ↩ mailgate2.port-x.de
SOA Record
Raw SOA
relay.boerde.de runge.relay.boerde.de 2025020401 10800 3600 604800 86400
Primary NS (mname)
relay.boerde.de
Admin Email (rname)
runge@relay.boerde.de
Serial
2025020401
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
relay.boerde.de
ns2.boerde.de
SPF Record
✓ Strict (-all)
v=spf1 mx include:_spf.boerde.de -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=none; pct=100; ri=8640000; aspf=r
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
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 mx include:_spf.boerde.de -all
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