Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
reha-reuterstrasse.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 20:13:46 UTC · ↺ Refresh
MX Hostnames
- mx0.gfo-online.de
MX Priorities
- mx0.gfo-online.de: 10
A / AAAA Records
- 23.88.92.128 ↩ dedi7177.your-server.de
- ::ffff:d44d:ee3f ↩ 63-238-ip.omc.net
- 2001:4dd0:100:1f00:80::80:1 ↩ webcluster01.netcologne.de
Mail Server IPs
- 45.85.200.25 ↩ mx0.gfo-online.de
SOA Record
Raw SOA
dns11.netcologne.de hostmaster.netcologne.de 2026031003 10800 3600 3600000 3600
Primary NS (mname)
dns11.netcologne.de
Admin Email (rname)
hostmaster@netcologne.de
Serial
2026031003
Refresh
10800s
Retry
3600s
Expire
3600000s
Minimum TTL
3600s
Nameservers (NS)
dns13.netcologne.de
dns11.netcologne.de
dns14.netcologne.de
dns12.netcologne.de
SPF Record
✓ Strict (-all)
v=spf1 include:gfo-online.de -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1:d:s; adkim=r; aspf=r
✓ 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
2 records- SPFv=spf1 include:gfo-online.de -all
- swisssign-check=bkNk0ofuHjicKDB2qnBU2D40pww
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