rrkassoc.com

Valid Email Server
Domain Lookup › rrkassoc.com

Domain Overview

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

Checked via [email protected] · 2026-03-20 01:23:30 UTC · ↺ Refresh

MX Hostnames

  • rrkassoc-com.mail.protection.outlook.com

MX Priorities

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

A / AAAA Records

  • 52.22.145.238 ↩ ec2-52-22-145-238.compute-1.amazonaws.com

Mail Server IPs

  • 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
  • 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
  • 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
  • 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
  • 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c946::3 ↩ mail-ch0pr04cu00603.inbound.protection.outlook.com
  • 2a01:111:f403:f905::3 ↩ mail-dm5pr02cu00203.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.mydyndns.org zone-admin.dyndns.com 2007072149 10800 1800 604800 1800
Primary NS (mname)
ns1.mydyndns.org
Admin Email (rname)
zone-admin@dyndns.com
Serial
2007072149
Refresh
10800s
Retry
1800s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

ns3146.dns.dyn.com
ns4128.dns.dyn.com
ns1196.dns.dyn.com
ns2188.dns.dyn.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com +ip4:168.245.102.208 -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
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1

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

All TXT Records

6 records
  • apple-domain-verification=buRLfBKwA8q9qolA
  • oct85i7uv8jmegbjb4vmhppe5f
  • SPFv=spf1 include:spf.protection.outlook.com +ip4:168.245.102.208 -all
  • google-site-verification=D8Dz_ID3zBgyk7ZJZPb-J3-jXkZXGmSjyC5DbC9LTkQ
  • MS=ms67411458
  • pax8-verification=c062f46c-91dc-3a8e-8cee-f096873d3c4e
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