efficiencyengineering.com

Valid Email Server
Domain Lookup › efficiencyengineering.com

Domain Overview

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

Checked via [email protected] · 2026-03-18 23:19:53 UTC · ↺ Refresh

MX Hostnames

  • mx1.mtaroutes.com
  • mx2.mtaroutes.com
  • mx3.mtaroutes.com

MX Priorities

  • mx2.mtaroutes.com: 20
  • mx1.mtaroutes.com: 10
  • mx3.mtaroutes.com: 30

A / AAAA Records

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

Mail Server IPs

  • 38.89.254.156 ↩ fe1-r2-in.ch03.l.antispamcloud.com
  • 2001:550:2:61::2fc:100 (no PTR)
  • 2001:550:2:3::62:100 ↩ fe2-r2-in.la10.l.antispamcloud.com
  • 38.71.16.244 ↩ fe2-r2-in.la10.l.antispamcloud.com

SOA Record

Raw SOA ns1.mydyndns.org zone-admin.dyndns.com 2008073140 10800 1800 604800 1800
Primary NS (mname)
ns1.mydyndns.org
Admin Email (rname)
zone-admin@dyndns.com
Serial
2008073140
Refresh
10800s
Retry
1800s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

ns2195.dns.dyn.com
ns3135.dns.dyn.com
ns4178.dns.dyn.com
ns1200.dns.dyn.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:216.16.243.178/31 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ 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

1 record
  • SPFv=spf1 ip4:216.16.243.178/31 include:spf.protection.outlook.com -all
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