guardianheatingandcooling.com

Valid Email Server
Domain Lookup › guardianheatingandcooling.com

Domain Overview

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

Checked via [email protected] · 2026-03-18 13:15:38 UTC · ↺ Refresh

MX Hostnames

  • smtp.secureserver.net
  • mailstore1.secureserver.net

MX Priorities

  • mailstore1.secureserver.net: 10
  • smtp.secureserver.net: 0

A / AAAA Records

  • 209.87.149.96 ↩ cloudhost-2963186.us-midwest-1.nxcli.net

Mail Server IPs

  • 216.69.141.78 ↩ osplibsmtp01-v02.prod.phx3.secureserver.net
  • 216.69.141.162 ↩ osplibsmtp02-v02.prod.phx3.secureserver.net
  • 216.69.141.114 ↩ osplibsmtp03-v02.prod.phx3.secureserver.net
  • 216.69.141.71 ↩ osplibsmtp01-v01.prod.phx3.secureserver.net
  • 216.69.141.113 ↩ osplibsmtp03-v01.prod.phx3.secureserver.net
  • 216.69.141.84 ↩ osplibsmtp02-v01.prod.phx3.secureserver.net

SOA Record

Raw SOA naomi.ns.cloudflare.com dns.cloudflare.com 2398950076 10000 2400 604800 1800
Primary NS (mname)
naomi.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398950076
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

roan.ns.cloudflare.com
naomi.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.smtp2go.com ?all
📊 DNS lookups: 1/10
? Neutral (?all) — no 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

3 records
  • D8717501
  • google-site-verification=bQe0lFaNH2YtyUoUMG91mZ2x-duuBBmQgHBPBICQk4A
  • SPFv=spf1 include:spf.smtp2go.com ?all
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