tagnull.de

Valid Email Server
Domain Lookup › tagnull.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
tagnull.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-28 14:57:47 UTC · ↺ Refresh

MX Hostnames

  • mxext1.mailbox.org
  • mxext2.mailbox.org
  • mxext3.mailbox.org

MX Priorities

  • mxext2.mailbox.org: 10
  • mxext3.mailbox.org: 20
  • mxext1.mailbox.org: 10

A / AAAA Records

  • 185.199.109.153 ↩ cdn-185-199-109-153.github.com
  • 185.199.110.153 ↩ cdn-185-199-110-153.github.com
  • 185.199.111.153 ↩ cdn-185-199-111-153.github.com
  • 185.199.108.153 ↩ cdn-185-199-108-153.github.com

Mail Server IPs

  • 80.241.60.215 ↩ mx2.mailbox.org
  • 2001:67c:2050:104::2:25:1 ↩ mx2.mailbox.org
  • 80.241.60.216 ↩ mx3.mailbox.org
  • 2001:67c:2050:104::3:25:1 ↩ mx3.mailbox.org
  • 80.241.60.212 ↩ mx1.mailbox.org
  • 2001:67c:2050:104::1:25:1 ↩ mx1.mailbox.org

SOA Record

Raw SOA ns1.first-ns.de dns.hetzner.com 2026031300 14400 1800 1209600 4500
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
dns@hetzner.com
Serial
2026031300
Refresh
14400s
Retry
1800s
Expire
1209600s
Minimum TTL
4500s

Nameservers (NS)

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

SPF Record

✓ Strict (-all)
v=spf1 include:mailbox.org mx -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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

1 record
  • SPFv=spf1 include:mailbox.org mx -all
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