jakob-brucker-gymnasium.de

Valid Email Server
Domain Lookup › jakob-brucker-gymnasium.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
jakob-brucker-gymnasium.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-02 19:02:51 UTC · ↺ Refresh

MX Hostnames

  • mail.jakob-brucker-gymnasium.de

MX Priorities

  • mail.jakob-brucker-gymnasium.de: 10

A / AAAA Records

  • 49.12.34.147 ↩ linden.effenberger.org
  • 2a01:4f8:c17:30a8::1 ↩ linden.effenberger.org

Mail Server IPs

  • 78.47.144.221 ↩ mx.effenberger.org
  • 2a01:4f8:1c17:80ad::1 ↩ mx.effenberger.org

SOA Record

Raw SOA ns1.core-networks.de postmaster.jakob-brucker-gymnasium.de 2024043722 28800 7200 604800 3600
Primary NS (mname)
ns1.core-networks.de
Admin Email (rname)
postmaster@jakob-brucker-gymnasium.de
Serial
2024043722
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns2.core-networks.eu
ns1.core-networks.de
ns3.core-networks.com

SPF Record

✓ Soft Fail (~all)
v=spf1 a mx ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; rf=afrf; sp=none; fo=1; ri=86400; adkim=r; aspf=r; pct=100
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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

3 records
  • apple-domain-verification=jdrqjO5AA35ScyFC
  • google-site-verification=8SC8gadboz21UQBNy5xCWP1eaKH0KA9KL9eyab0i7tA
  • SPFv=spf1 a mx ~all
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