qu3.de

Valid Email Server
Domain Lookup › qu3.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
qu3.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-27 20:16:17 UTC · ↺ Refresh

MX Hostnames

  • mail.qu3.org

MX Priorities

  • mail.qu3.org: 10

A / AAAA Records

  • 136.243.243.24 ↩ v24.qu3.org
  • 2a01:4f8:191:4224::24 ↩ v24.qu3.org

Mail Server IPs

  • 136.243.243.25 ↩ mail.qu3.org
  • 2a01:4f8:191:4224::25 ↩ mail.qu3.org

SOA Record

Raw SOA ns1.first-ns.de dns.hetzner.com 2026030100 14400 1800 604800 86400
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
dns@hetzner.com
Serial
2026030100
Refresh
14400s
Retry
1800s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

robotns3.second-ns.com
ns1.first-ns.de
robotns2.second-ns.de

SPF Record

✓ Strict (-all)
v=spf1 mx a ip4:144.76.41.37 ip4:136.243.243.24/29 ip6:2a01:4f8:191:4224::/64 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
⚠ Public key (p=) missing in DKIM record for selector google.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

1 record
  • SPFv=spf1 mx a ip4:144.76.41.37 ip4:136.243.243.24/29 ip6:2a01:4f8:191:4224::/64 -all
Full email verification for qu3.de

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits