jakob.de

Valid Email Server
Domain Lookup › jakob.de

Domain Overview

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

Checked via [email protected] · 2026-04-01 20:14:05 UTC · ↺ Refresh

MX Hostnames

  • mailbox.jakob.de

MX Priorities

  • mailbox.jakob.de: 10

A / AAAA Records

  • 217.145.101.133 (no PTR)

Mail Server IPs

  • 217.145.101.135 ↩ mailbox.jakob.de

SOA Record

Raw SOA hydrogen.ns.hetzner.com dnsadm.lamp-solutions.de 2024103100 28800 7200 604800 86400
Primary NS (mname)
hydrogen.ns.hetzner.com
Admin Email (rname)
dnsadm@lamp-solutions.de
Serial
2024103100
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

helium.ns.hetzner.de
oxygen.ns.hetzner.com
hydrogen.ns.hetzner.com

SPF Record

✓ Strict (-all)
v=spf1 a mx a:relay01.jakob.de a:relay02.jakob.de a:relay03.jakob.de a:paul01.jakob.de ip4:148.251.149.181 ip4:217.145.101.130 ip4:148.251.133.118 ip4:5.9.190.120 include:sendgrid.net include:videobuster.de -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 3 found
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail

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

All TXT Records

2 records
  • google-site-verification=lBZFZX9roKVmF5IzrwzGf4-GuFMP9KcRhakVT7PEmsA
  • SPFv=spf1 a mx a:relay01.jakob.de a:relay02.jakob.de a:relay03.jakob.de a:paul01.jakob.de ip4:148.251.149.181 ip4:217.145.101.130 ip4:148.251.133.118 ip4:5.9.190.120 include:sendgrid.net include:videobuster.de -all
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