Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gerdes-ag.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 04:52:40 UTC · ↺ Refresh
MX Hostnames
- mailgateway.gag-intern.de
MX Priorities
- mailgateway.gag-intern.de: 100
A / AAAA Records
- 168.119.67.49 ↩ gerdesmedical.de
Mail Server IPs
- 217.76.100.146 ↩ mail.gag-intern.de
SOA Record
Raw SOA
ns53.domaincontrol.com dns.jomax.net 2025122202 28800 7200 604800 600
Primary NS (mname)
ns53.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025122202
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns53.domaincontrol.com
ns54.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 mx:gerdes-ag.de a:gerdes-ag.de a:hetzner.gerdescom.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 mx:gerdes-ag.de a:gerdes-ag.de a:hetzner.gerdescom.de -all
- google-site-verification=y8yczVx7OMQa6Q_UI_LVyiIAQyXRXPlrwEpappdJXR4
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