rdcrumley.com

Valid Email Server
Domain Lookup › rdcrumley.com

Domain Overview

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

Checked via [email protected] · 2026-03-18 11:31:48 UTC · ↺ Refresh

MX Hostnames

  • rdcrumley-com.mail.protection.outlook.com

MX Priorities

  • rdcrumley-com.mail.protection.outlook.com: 1

A / AAAA Records

  • 20.225.140.52 (no PTR)

Mail Server IPs

  • 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
  • 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
  • 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
  • 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
  • 2a01:111:f403:f903:: (no PTR)
  • 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:f90c:: ↩ mail-sn1pr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA ns71.worldnic.com namehost.worldnic.com 125021919 10800 3600 604800 3600
Primary NS (mname)
ns71.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125021919
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns72.worldnic.com
ns71.worldnic.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:216.139.77.4 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

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

5 records
  • jvqrgmh1t19dygsg9ykk92jx2yrgvtsy
  • 202204042209041z4nlq604zzitcjheo8fp8op4ss0chkng7s95qsrs2al9fkjfb
  • SPFv=spf1 ip4:216.139.77.4 include:spf.protection.outlook.com -all
  • MS=ms54655012
  • DMARCv=DMARC1; p=none; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
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