havmackconstruction.com

Valid Email Server
Domain Lookup › havmackconstruction.com

Domain Overview

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

Checked via [email protected] · 2026-03-19 15:18:38 UTC · ↺ Refresh

MX Hostnames

  • havmackconstruction-com.mail.protection.outlook.com

MX Priorities

  • havmackconstruction-com.mail.protection.outlook.com: 10

A / AAAA Records

  • 159.135.9.241 (no PTR)

Mail Server IPs

  • 52.101.41.28 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
  • 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
  • 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
  • 52.101.40.6 ↩ mail-cy1pr03cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:c902::2 ↩ mail-sj0pr03cu01602.inbound.protection.outlook.com

SOA Record

Raw SOA dns105.register.com root.register.com 120100111 10800 3600 604800 3600
Primary NS (mname)
dns105.register.com
Admin Email (rname)
root@register.com
Serial
120100111
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

dns106.register.com
dns105.register.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.emfwd.name-services.com ip4:69.26.182.242 ip4:69.26.182.10 ip4:209.67.128.0/23 ip4:74.202.139.0/24 ip4:74.202.142.0/24 ip4:74.202.15.0/24 ip4:64.191.223.0/24 ip4:65.74.168.0/24 ip4:216.163.188.0/24 mx -all
📊 DNS lookups: 3/10
✓ 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

2 records
  • SPFv=spf1 include:spf.protection.outlook.com include:_spf.emfwd.name-services.com ip4:69.26.182.242 ip4:69.26.182.10 ip4:209.67.128.0/23 ip4:74.202.139.0/24 ip4:74.202.142.0/24 ip4:74.202.15.0/24 ip4:64.191.223.0/24 ip4:65.74.168.0/24 ip4:216.163.188.0/24 mx -all
  • j9dje1lhs9dmk62ckpvad7f4ms
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 havmackconstruction.com

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

No credit card required
Get 1,000 Free Credits