Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jet.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-04 14:06:10 UTC · ↺ Refresh
MX Hostnames
- iris.corpex-net.de
- smtp-fallback.corpex-net.de
- smtp-relay.corpex-net.de
MX Priorities
- smtp-relay.corpex-net.de: 100
- smtp-fallback.corpex-net.de: 110
- iris.corpex-net.de: 10
A / AAAA Records
- 194.6.194.216 ↩ titania.jet.corpex-kunden.de
Mail Server IPs
- 194.6.192.35 ↩ mx-backup.corpex-net.de
- 80.252.109.12 (no PTR)
- 194.6.192.38 ↩ iris.corpex-net.de
SOA Record
Raw SOA
dns1.cscdns.net hostmaster.cscdns.net 2022072925 28800 7200 604800 14400
Primary NS (mname)
dns1.cscdns.net
Admin Email (rname)
hostmaster@cscdns.net
Serial
2022072925
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
14400s
Nameservers (NS)
dns1.cscdns.net
dns2.cscdns.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.corpex.de include:spf.crsend.com mx -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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- _proofpoint-verification=4398abf3-ee92-4dd5-ab31-5f630fe92275
- SPFv=spf1 include:spf.corpex.de include:spf.crsend.com mx -all
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