mbr1cu.org

Valid Email Server
Domain Lookup › mbr1cu.org

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
mbr1cu.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 01:14:48 UTC · ↺ Refresh

MX Hostnames

  • mbr1cu-org.mail.protection.outlook.com

MX Priorities

  • mbr1cu-org.mail.protection.outlook.com: 0

A / AAAA Records

  • 16.59.159.42 ↩ ec2-16-59-159-42.us-east-2.compute.amazonaws.com
  • 18.119.232.107 ↩ ec2-18-119-232-107.us-east-2.compute.amazonaws.com
  • 3.146.99.235

Mail Server IPs

  • 52.101.41.28 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
  • 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
  • 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
  • 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
  • 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
  • 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA gordon.ns.cloudflare.com dns.cloudflare.com 2398017552 10000 2400 604800 1800
Primary NS (mname)
gordon.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398017552
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

piper.ns.cloudflare.com
gordon.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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

4 records
  • ufu3mv6b24bim7s2cotd21jf7e
  • SPFv=spf1 include:spf.protection.outlook.com ~all
  • MS=ms23247762
  • sophos-domain-verification=f43e2eb44e8f0540de50ea5e6bd92d6ac3c90aecd5d2439cae75d4f73c1a55da
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