back9development.com

Valid Email Server
Domain Lookup › back9development.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
back9development.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-26 10:38:25 UTC · ↺ Refresh

MX Hostnames

  • back9development-com.mail.protection.outlook.com

MX Priorities

  • back9development-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 198.185.159.144 (no PTR)
  • 198.185.159.145 (no PTR)
  • 198.49.23.144
  • 198.49.23.145

Mail Server IPs

  • 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
  • 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
  • 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
  • 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
  • 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:c902::7 ↩ mail-sj0pr02cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com

SOA Record

Raw SOA ns39.domaincontrol.com dns.jomax.net 2025103100 28800 7200 604800 600
Primary NS (mname)
ns39.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025103100
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns40.domaincontrol.com
ns39.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 include:secureserver.net include:spfa.spmails.com -all
📊 DNS lookups: 2/10
✓ 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
  • MS=ms92320469
  • SPFv=spf1 include:secureserver.net include:spfa.spmails.com -all
  • google-site-verification=uD1lQG3RPTBRop6VjQki30yPB_LN5WcH2-KCEbSUflI
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