zib.de

Valid Email Server
Domain Lookup › zib.de

Domain Overview

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

Checked via [email protected] · 2026-04-01 13:28:38 UTC · ↺ Refresh

MX Hostnames

  • mailer01-a.zib.de
  • mailer01.zib.de
  • mailer01-b.zib.de

MX Priorities

  • mailer01.zib.de: 50
  • mailer01-a.zib.de: 20
  • mailer01-b.zib.de: 20

A / AAAA Records

  • 130.73.131.153 ↩ lb017.zib.de

Mail Server IPs

  • 130.73.108.150 ↩ mailer01.zib.de
  • 130.73.108.154 ↩ mailer01-a.zib.de
  • 130.73.108.155 ↩ mailer01-b.zib.de

SOA Record

Raw SOA ns1.zib.de hostmaster.zib.de 2026040102 43200 3600 3600000 86400
Primary NS (mname)
ns1.zib.de
Admin Email (rname)
hostmaster@zib.de
Serial
2026040102
Refresh
43200s
Retry
3600s
Expire
3600000s
Minimum TTL
86400s

Nameservers (NS)

dns-1.dfn.de
dns-2.dfn.de
dns-3.dfn.de
ns1.zib.de
ns2.zib.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:130.73.108.11 ip4:130.73.108.150 ip4:130.73.108.151 ip4:130.73.108.154 ip4:130.73.108.155 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1;p=quarantine;sp=quarantine;rua=mailto:[email protected];ruf=mailto:[email protected];aspf=s;adkim=r;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine

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

9 records
  • MS=ms98256402
  • google-site-verification=68gILnIEFnHitdvfMggWd8-LoFqCy3wucPNlwkE1guA
  • google-site-verification=cwtJ4wQWCKhYf9a7tQ4kw9bfjVbEG8XHLB50ihzgv1g
  • apple-domain-verification=LyEvvqpC53l48e5z
  • ZOOM_verify_dRRBvGdFQy2sH75-9d8NDw
  • docusign=55832c36-b152-4c4f-bc12-162412938f7e
  • 772c1d28-a168-4fe7-a094-3d8be882f221
  • cisco-ci-domain-verification=4b704d9b9771b5f7d71b7740f926f7c312909062e028f45fae976fc5b647e96
  • SPFv=spf1 ip4:130.73.108.11 ip4:130.73.108.150 ip4:130.73.108.151 ip4:130.73.108.154 ip4:130.73.108.155 -all
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