duckworthemail.com

Valid Email Server
Domain Lookup › duckworthemail.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
duckworthemail.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 10:04:31 UTC · ↺ Refresh

MX Hostnames

  • Duckworthemail-com.mail.protection.outlook.com
  • mx.verio.com

MX Priorities

  • duckworthemail-com.mail.protection.outlook.com: 0
  • mx.verio.com: 30

A / AAAA Records

  • 66.96.146.102

Mail Server IPs

  • 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
  • 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
  • 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
  • 52.101.11.3 ↩ mail-sn1pr0501cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
  • 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
  • 66.96.142.50 ↩ 50.142.96.66.static.eigbox.net
  • 66.96.142.52 ↩ 52.142.96.66.static.eigbox.net
  • 66.96.142.51

SOA Record

Raw SOA ns1.verio.com dnsadmin.verio.com 2016070754 10800 3600 604800 3600
Primary NS (mname)
ns1.verio.com
Admin Email (rname)
dnsadmin@verio.com
Serial
2016070754
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns2.verio.com
ns1.verio.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -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

✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim

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

All TXT Records

2 records
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • google-site-verification=RmAzMjmgZOMS0HKCvvOzCYq6V-e05tVSQTo74caFjV8
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 duckworthemail.com

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

No credit card required
Get 1,000 Free Credits