rcboe.org

Valid Email Server
Domain Lookup › rcboe.org

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rcboe.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-25 20:46:45 UTC · ↺ Refresh

MX Hostnames

  • rcboe-org.mail.protection.outlook.com

MX Priorities

  • rcboe-org.mail.protection.outlook.com: 0

A / AAAA Records

  • 104.17.71.73 (no PTR)

Mail Server IPs

  • 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
  • 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
  • 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
  • 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
  • 2a01:111:f403:c922::1 ↩ mail-bl0pr05cu00501.inbound.protection.outlook.com
  • 2a01:111:f403:c946::7 ↩ mail-ch5pr02cu00307.inbound.protection.outlook.com
  • 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com

SOA Record

Raw SOA ns11.domaincontrol.com dns.jomax.net 2026030900 28800 7200 604800 600
Primary NS (mname)
ns11.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026030900
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns11.domaincontrol.com
ns12.domaincontrol.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

✓ 3 found
selector1._domainkey
selector2._domainkey
dkim._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

5 records
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • kZN+8Be3yh5CA3og4Uxl0sY+u3m1SrlBx+rAXIMFIJO/0mntAUkNQCalFn1rZiOfmA9OgkjmNdl4uuxl J7aY4A==
  • MS=ABCD800620C88F5197683AC012749439A1F4EFA4
  • v=verifydomain MS=5753232
  • knowbe4-site-verification=b34a5b9dbcf1ac27530977ffc6e4f340
Full email verification for rcboe.org

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits