Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gsi.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-27 15:16:54 UTC · ↺ Refresh
MX Hostnames
- b2841.mx.srv.dfn.de
- a2841.mx.srv.dfn.de
- c2841.mx.srv.dfn.de
MX Priorities
- c2841.mx.srv.dfn.de: 10
- b2841.mx.srv.dfn.de: 10
- a2841.mx.srv.dfn.de: 10
A / AAAA Records
- 140.181.3.149 ↩ lxcms6.gsi.de
Mail Server IPs
- 194.95.239.69 ↩ c2841.mx.srv.dfn.de
- 194.95.235.69 ↩ b2841.mx.srv.dfn.de
- 194.95.233.69 ↩ a2841.mx.srv.dfn.de
SOA Record
Raw SOA
lxdns1.gsi.de linux-service.gsi.de 1774622404 10800 3600 604800 3600
Primary NS (mname)
lxdns1.gsi.de
Admin Email (rname)
linux-service@gsi.de
Serial
1774622404
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns-2.dfn.de
dns-3.dfn.de
lxdns1.gsi.de
lxdns2.gsi.de
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:140.181.3.111 ip4:140.181.3.112 ip4:140.181.3.146 ip4:140.181.3.147 ip4:140.181.3.30 ip4:140.181.3.230 ~all
📊 DNS lookups: 0/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 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
5 records- SPFv=spf1 ip4:140.181.3.111 ip4:140.181.3.112 ip4:140.181.3.146 ip4:140.181.3.147 ip4:140.181.3.30 ip4:140.181.3.230 ~all
- OSSRH-49122
- google-site-verification=dbjLrVX1_-lOC8CzUtYiv_Nu0ZDCkceGTM2DjWqtM2A
- ZOOM_verify_vKYDVKEQQA27XaZvbX2t1Q
- atlassian-domain-verification=A941Bimy05RkQFmpa86uHO6XmZJyA8vfEETBM84NjcdVbusTMIo76DJcZWN3aGOd
Full email verification for gsi.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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