sebastianpaul.de

Valid Email Server
Domain Lookup › sebastianpaul.de

Domain Overview

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

Checked via [email protected] · 2026-04-04 17:11:36 UTC · ↺ Refresh

MX Hostnames

  • mxext1.mailbox.org
  • mxext1.mailbox.org

MX Priorities

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

A / AAAA Records

  • 188.68.34.185 ↩ erdkampf.org

Mail Server IPs

  • 80.241.60.212 ↩ mx1.mailbox.org
  • 2001:67c:2050:104::1:25:1 ↩ mx1.mailbox.org

SOA Record

Raw SOA root-dns.netcup.net dnsadmin.netcup.net 2024040208 28800 7200 1209600 300
Primary NS (mname)
root-dns.netcup.net
Admin Email (rname)
dnsadmin@netcup.net
Serial
2024040208
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
300s

Nameservers (NS)

third-dns.netcup.net
second-dns.netcup.net
root-dns.netcup.net

SPF Record

✓ Strict (-all)
v=spf1 include:mailbox.org -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

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 -all
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for sebastianpaul.de

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits