docbiedermann.com

Valid Email Server
Domain Lookup › docbiedermann.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
docbiedermann.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-24 02:08:29 UTC · ↺ Refresh

MX Hostnames

  • mx.paubox.com

MX Priorities

  • mx.paubox.com: 1

A / AAAA Records

  • 141.193.213.10
  • 141.193.213.11

Mail Server IPs

  • 165.140.171.155 ↩ mx.paubox.com
  • 165.140.171.195 ↩ mx.paubox.com
  • 165.140.171.164 ↩ mx.paubox.com
  • 165.140.171.124 ↩ mx.paubox.com
  • 165.140.171.169 ↩ mx.paubox.com
  • 165.140.171.111 ↩ mx.paubox.com
  • 165.140.171.199 ↩ mx.paubox.com
  • 165.140.171.170 ↩ mx.paubox.com
  • 165.140.171.189 ↩ mx.paubox.com
  • 165.140.171.15 ↩ mx.paubox.com
  • 165.140.171.101
  • 165.140.171.143
  • 165.140.171.18

SOA Record

Raw SOA bob.ns.cloudflare.com dns.cloudflare.com 2397341622 10000 2400 604800 1800
Primary NS (mname)
bob.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397341622
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

bob.ns.cloudflare.com
iris.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.paubox.com include:spf.intermedia.net ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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
  • google-site-verification=gN9vqLJodF8vMfmhNErBGlsPVmcjLSOkY4IA7dE3SF0
  • SPFv=spf1 include:spf.paubox.com include:spf.intermedia.net ~all
  • MS=ms30116611
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 docbiedermann.com

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

No credit card required
Get 1,000 Free Credits