heatsoftware.com

Valid Email Server
Domain Lookup › heatsoftware.com

Domain Overview

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

Checked via [email protected] · 2026-03-21 23:17:23 UTC · ↺ Refresh

MX Hostnames

  • heatsoftware-com.mail.protection.outlook.com

MX Priorities

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

A / AAAA Records

  • 104.21.27.135 (no PTR)
  • 172.67.142.187 (no PTR)
  • 2606:4700:3033::6815:1b87
  • 2606:4700:3037::ac43:8ebb

Mail Server IPs

  • 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
  • 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
  • 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
  • 52.101.10.2 ↩ mail-bn8pr03cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:c902::7 ↩ mail-sj0pr02cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:c922::1 ↩ mail-bl0pr05cu00501.inbound.protection.outlook.com
  • 2a01:111:f403:f804::2 ↩ mail-co1pr05cu00402.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com

SOA Record

Raw SOA cruz.ns.cloudflare.com dns.cloudflare.com 2398388845 10000 2400 604800 1800
Primary NS (mname)
cruz.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398388845
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

cruz.ns.cloudflare.com
ivan.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:206.104.144.25 ip4:188.111.57.25 ip4:82.195.172.185 ip4:82.195.172.187 ip4:203.222.174.158 ip4:206.104.144.249 ip4:206.104.144.248 a:mail.heatsoftware.com include:mktomail.com include:spf.protection.outlook.com include:emailsrvr.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

4 records
  • SPFv=spf1 ip4:206.104.144.25 ip4:188.111.57.25 ip4:82.195.172.185 ip4:82.195.172.187 ip4:203.222.174.158 ip4:206.104.144.249 ip4:206.104.144.248 a:mail.heatsoftware.com include:mktomail.com include:spf.protection.outlook.com include:emailsrvr.com -all
  • vCl4yXfZu6CYwx0vFFKHzxoP9QBU1s1tGSHxEX0yq1e8T1zH0Y98RLts56FnjmjiZ7ZYJRd1W3jpnUUhxZ4ggg==
  • 8OS1YOp0fq4hGhuuptsjMx026LujguqO4+ll2OZ7L/Q8QF6XXojwhSDX6gO1g3nF/y4zPtemDmQCU0xoHKZc8A==
  • MS=ms88395740
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