Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cdu-altona-elbvororte.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 18:35:46 UTC · ↺ Refresh
MX Hostnames
- smtp-fallback.corpex-net.de
- smtp-relay.corpex-net.de
- smtp.mail.cdu-altona-elbvororte.de
MX Priorities
- smtp-relay.corpex-net.de: 100
- smtp-fallback.corpex-net.de: 110
- smtp.mail.cdu-altona-elbvororte.de: 20
A / AAAA Records
- 194.6.192.23 ↩ pisces.corpex-net.de
Mail Server IPs
- 194.6.192.35 ↩ mx-backup.corpex-net.de
- 80.252.109.12 (no PTR)
- 194.6.192.31 ↩ corvusmajor.corpex-net.de
SOA Record
Raw SOA
dns-auth-1.corpex-dns.de dnsmaster.corpex-dns.de 2021041901 28800 7200 3600000 3600
Primary NS (mname)
dns-auth-1.corpex-dns.de
Admin Email (rname)
dnsmaster@corpex-dns.de
Serial
2021041901
Refresh
28800s
Retry
7200s
Expire
3600000s
Minimum TTL
3600s
Nameservers (NS)
dns-auth-1.corpex-dns.de
dns-auth-2.corpex-dns.net
SPF Record
✗ MissingNo SPF record — domain is unprotected against spoofing.
⚠ No SPF record found. Email servers cannot verify authorized senders.
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
No TXT records found.
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