r1cu.org

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
r1cu.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-23 23:02:37 UTC · ↺ Refresh

MX Hostnames

  • r1cu-org.mail.protection.outlook.com

MX Priorities

  • r1cu-org.mail.protection.outlook.com: 0

A / AAAA Records

  • 141.193.213.21 (no PTR)
  • 141.193.213.20 (no PTR)

Mail Server IPs

  • 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
  • 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
  • 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
  • 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
  • 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
  • 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com

SOA Record

Raw SOA ns42.cloudns.net support.cloudns.net 2025120301 7200 1800 1209600 3600
Primary NS (mname)
ns42.cloudns.net
Admin Email (rname)
support@cloudns.net
Serial
2025120301
Refresh
7200s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

ns43.cloudns.net
ns42.cloudns.net

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:209.65.243.19 ip4:44.227.22.195/32 ip4:63.117.120.96/27 ip4:69.38.149.224/27 ip4:208.252.57.192/27 ip4:34.66.142.33 ip4:141.193.213.20 ip4:141.193.213.21 ip4:12.133.120.158 ip4:44.229.121.55 ip4:35.80.141.6 ip4:148.59.100.16/28 ip4:148.59.100.16/28 a:_mailhosts.swbc.com include:spf.protection.outlook.com include:mailgun.org include:edgepilot.com include:icpbounce.com include:emsd1.com include:spfref.jackhenry.com include:jhahosted.com include:mktomail.com -all
📊 DNS lookups: 10/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1;p=none;sp=none;pct=100;rua=mailto:[email protected];ri=86400;aspf=r;adkim=r;fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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

6 records
  • google-site-verification=S_87ktRR5Q-g-JfZtw325c6KDC-WDygh3my15haHinE
  • MS=ms38829705
  • MS=1F54C1433D188E5129F186E90729BCD35AF142E8
  • canva-site-verification=flrJ6AQvDbXJ8PhjKiBn0g
  • 39yrdtmgL1gxNsjc3Ni8Ig==
  • SPFv=spf1 mx ip4:209.65.243.19 ip4:44.227.22.195/32 ip4:63.117.120.96/27 ip4:69.38.149.224/27 ip4:208.252.57.192/27 ip4:34.66.142.33 ip4:141.193.213.20 ip4:141.193.213.21 ip4:12.133.120.158 ip4:44.229.121.55 ip4:35.80.141.6 ip4:148.59.100.16/28 ip4:148.59.100.16/28 a:_mailhosts.swbc.com include:spf.protection.outlook.com include:mailgun.org include:edgepilot.com include:icpbounce.com include:emsd1.com include:spfref.jackhenry.com include:jhahosted.com include:mktomail.com -all
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