Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
leibniz-zmt.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 18:10:19 UTC · ↺ Refresh
MX Hostnames
- mx.leibniz-zmt.de
MX Priorities
- mx.leibniz-zmt.de: 20
A / AAAA Records
- 194.95.13.151 (no PTR)
Mail Server IPs
- 194.95.13.133 ↩ mx.leibniz-zmt.de
SOA Record
Raw SOA
deneb.dfn.de hostmaster.dfn.de 2026032000 14400 7200 3024000 3600
Primary NS (mname)
deneb.dfn.de
Admin Email (rname)
hostmaster@dfn.de
Serial
2026032000
Refresh
14400s
Retry
7200s
Expire
3024000s
Minimum TTL
3600s
Nameservers (NS)
dns-2.dfn.de
dns-3.dfn.de
dns-1.dfn.de
SPF Record
✓ Strict (-all)
v=spf1 a mx include:_spf.zimpel.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=reject; adkim=s; aspf=s; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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
8 records- a0uom8m3jg61d35bt3gr07eh2
- google-site-verification=9y7lrSGXDpWRSmZ97MbLtUEod3QjxtOrflAUagMeRgo
- apple-domain-verification=YMFNHBjXiExRsmKS
- ndpel6e624hemco5bf1qbipv3o
- adobe-idp-site-verification=246e7be9025db4e7b511838fe1171ec4c62df39d4004d9988a93e3b2222e58b6
- p46via10kgj6g00fbc3e7b7a47
- SPFv=spf1 a mx include:_spf.zimpel.de -all
- logmein-verification-code=96fd7740-ea22-42cf-bef3-941c72ffb30c
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