spengineersltd.com

Valid Email Server
Domain Lookup › spengineersltd.com

Domain Overview

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

Checked via [email protected] · 2026-03-24 19:34:56 UTC · ↺ Refresh

MX Hostnames

  • spengineersltd-com.mail.protection.outlook.com

MX Priorities

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

A / AAAA Records

  • 104.21.78.163 (no PTR)
  • 172.67.223.194 (no PTR)
  • 2606:4700:3035::ac43:dfc2
  • 2606:4700:3032::6815:4ea3

Mail Server IPs

  • 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
  • 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
  • 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
  • 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:f905::3 ↩ mail-dm5pr02cu00203.inbound.protection.outlook.com

SOA Record

Raw SOA dom.ns.cloudflare.com dns.cloudflare.com 2398955743 10000 2400 604800 1800
Primary NS (mname)
dom.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398955743
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

millie.ns.cloudflare.com
dom.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 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

3 records
  • 202103041912274err2eup1lulycl686vq9oce151203w1eid2lg42ab756cj0xq
  • MS=ms89913797
  • SPFv=spf1 include:spf.protection.outlook.com -all
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