colonialmarble.net

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
colonialmarble.net
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-23 07:14:06 UTC · ↺ Refresh

MX Hostnames

  • colonialmarble-net.mail.protection.outlook.com

MX Priorities

  • colonialmarble-net.mail.protection.outlook.com: 0

A / AAAA Records

  • 172.67.184.6 (no PTR)
  • 104.21.84.2 (no PTR)
  • 2606:4700:3033::6815:5402
  • 2606:4700:3030::ac43:b806

Mail Server IPs

  • 52.101.41.28 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
  • 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
  • 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
  • 52.101.9.17 (no PTR)
  • 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com

SOA Record

Raw SOA heather.ns.cloudflare.com dns.cloudflare.com 2396427141 10000 2400 604800 1800
Primary NS (mname)
heather.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396427141
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

heather.ns.cloudflare.com
zeus.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:243614466.spf06.hubspotemail.net
📊 DNS lookups: 1/10

DMARC Record

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

DKIM Selectors

✓ 4 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google

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

All TXT Records

6 records
  • google-site-verification=W9EqN4BXtJr9M24k2LUmB88FbkOMpGcF-oEbucseDiU
  • google-site-verification=XlkGoHM75yxnd3PxBcqVJ3eKDvbf5Ildtx2mW_Zu3Fk
  • SPFv=spf1 include:243614466.spf06.hubspotemail.net
  • SPFv=spf1 include:_spf.google.com ip4:198.37.144.16 ip4:208.75.120.0/22 ip4:108.52.194.245 include:spf.constantcontact.com include:mailgun.org include:spf.protection.outlook.com ~all
  • MS=C576C2D0DD91B5C247A1B0229F83ECEB67EC16FE
  • google-site-verification=KRRdzsA-owpTqT8zWYYSTNvISrO-YkXzjTSNh-YjdOs
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 colonialmarble.net

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

No credit card required
Get 1,000 Free Credits