caskeyholzman.com

Valid Email Server
Domain Lookup › caskeyholzman.com

Domain Overview

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

Checked via [email protected] · 2026-03-19 04:16:53 UTC · ↺ Refresh

MX Hostnames

  • caskeyholzman-com.mail.protection.outlook.com

MX Priorities

  • caskeyholzman-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 104.16.108.239 (no PTR)
  • 104.16.110.239 (no PTR)
  • 104.16.111.239
  • 104.16.112.239
  • 104.16.109.239

Mail Server IPs

  • 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
  • 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
  • 52.101.8.46 ↩ mail-dm6pr05cu00406.inbound.protection.outlook.com
  • 52.101.40.4 ↩ mail-cy5pr03cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:c902::4 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
  • 2a01:111:f403:f908:: ↩ mail-bn1pr21cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
  • 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com

SOA Record

Raw SOA barbara.ns.cloudflare.com dns.cloudflare.com 2398568373 10000 2400 604800 1800
Primary NS (mname)
barbara.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398568373
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

carter.ns.cloudflare.com
barbara.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate 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:spf.protection.outlook.com ~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 caskeyholzman.com

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

No credit card required
Get 1,000 Free Credits