undef.de

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
undef.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-21 18:22:43 UTC · ↺ Refresh

MX Hostnames

  • mx2.aikon.de
  • mx1.aikon.de

MX Priorities

  • mx1.aikon.de: 10
  • mx2.aikon.de: 20

A / AAAA Records

  • 88.99.25.113 ↩ mx2.aikon.de
  • 2a01:4f8:10a:1b0::1 ↩ jenny.aikon.de

Mail Server IPs

  • 94.130.102.189 ↩ mx1.aikon.de
  • 2a01:4f8:10a:1b0::6 ↩ mx1.aikon.de
  • 88.99.25.113 ↩ mx2.aikon.de
  • 2a01:4f8:10a:1b0::5 ↩ ns2.aikon.de

SOA Record

Raw SOA ns1.aikon.de hostmaster.aikon.de 2019100401 3600 900 604800 3600
Primary NS (mname)
ns1.aikon.de
Admin Email (rname)
hostmaster@aikon.de
Serial
2019100401
Refresh
3600s
Retry
900s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns2.aikon.de
ns1.aikon.de

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:88.99.25.113 ip4:94.130.247.93 ip6:2a01:4f8:10a:1b0::3 ip6:2a01:4f8:10a:1b0::6 ip4:159.69.155.188 ip6:2a01:4f8:c2c:4aa1::1 mx a ?all
📊 DNS lookups: 2/10
? Neutral (?all) — no enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No 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

1 record
  • SPFv=spf1 ip4:88.99.25.113 ip4:94.130.247.93 ip6:2a01:4f8:10a:1b0::3 ip6:2a01:4f8:10a:1b0::6 ip4:159.69.155.188 ip6:2a01:4f8:c2c:4aa1::1 mx a ?all
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