Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
shnbk.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 14:55:54 UTC · ↺ Refresh
MX Hostnames
- smtp-backup2.portunity.de
- mx0.shnbk.de
- smtp-backup1.portunity.de
MX Priorities
- mx0.shnbk.de: 10
- smtp-backup1.portunity.de: 20
- smtp-backup2.portunity.de: 20
A / AAAA Records
- 144.76.158.76 ↩ shnbk.de
Mail Server IPs
- 144.76.158.76 ↩ shnbk.de
- 217.144.128.54 ↩ smtp-backup1.portunity.de
- 2a02:a00::2:0:0:54 ↩ smtp-backup1.portunity.de
- 37.120.186.72 ↩ smtp-backup2-2.portunity.de
- 2a03:4000:f:5b9::25 ↩ smtp-backup2-2.portunity.de
SOA Record
Raw SOA
hydrogen.ns.hetzner.com dns.hetzner.com 2026040301 86400 10800 3600000 3600
Primary NS (mname)
hydrogen.ns.hetzner.com
Admin Email (rname)
dns@hetzner.com
Serial
2026040301
Refresh
86400s
Retry
10800s
Expire
3600000s
Minimum TTL
3600s
Nameservers (NS)
helium.ns.hetzner.de
hydrogen.ns.hetzner.com
oxygen.ns.hetzner.com
SPF Record
✓ Strict (-all)
v=spf1 mx:mx0.shnbk.de mx:shnbk.de mx:smtp-backup1.portunity.de smtp-backup2.portunity.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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:mx0.shnbk.de mx:shnbk.de mx:smtp-backup1.portunity.de smtp-backup2.portunity.de -all
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