comfortsystemusa.com

Valid Email Server
Domain Lookup › comfortsystemusa.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
comfortsystemusa.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-10-03 10:35:24 UTC · ↺ Refresh

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MX Hostnames

  • comfortsystemsusa-com.mail.protection.outlook.com

MX Priorities

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

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
  • 52.101.40.0 ↩ mail-cy3pr04cu00100.inbound.protection.outlook.com
  • 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
  • 52.101.9.34 ↩ mail-bl0pr03cu00402.inbound.protection.outlook.com
  • 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com
  • 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
  • 2a01:111:f403:f900::1 ↩ mail-mn2pr05cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com

SOA Record

Raw SOA ns1-02.azure-dns.com dnsadmin.comfortsystemsusa.com 205201415 86400 7200 1209600 900
Primary NS (mname)
ns1-02.azure-dns.com
Admin Email (rname)
dnsadmin@comfortsystemsusa.com
Serial
205201415
Refresh
86400s
Retry
7200s
Expire
1209600s
Minimum TTL
900s

Nameservers (NS)

ns3-02.azure-dns.org
ns4-02.azure-dns.info
ns1-02.azure-dns.com
ns2-02.azure-dns.net

SPF Record

✓ Strict (-all)
v=spf1 mx:comfortsystemsusa-com.mail.protection.outlook.com ip4:72.32.72.85 ip4:162.242.134.119 ip4:72.32.72.83 ip4:72.32.72.84 include:spf.protection.outlook.com -all include:_netblocks.mimecast.com -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

3 records
  • SPFv=spf1 mx:comfortsystemsusa-com.mail.protection.outlook.com ip4:72.32.72.85 ip4:162.242.134.119 ip4:72.32.72.83 ip4:72.32.72.84 include:spf.protection.outlook.com -all include:_netblocks.mimecast.com -all
  • atlassian-domain-verification=3CG5fPM4Hf0BvsHxT/O5JRBX2d4aDCxwJNHJw4S5eaBVL37+ZzeWtcazFhnhnLZt
  • MS=ms62119434
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