Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
columbian.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 01:18:44 UTC · ↺ Refresh
MX Hostnames
- columbian-com.mail.protection.outlook.com
MX Priorities
- columbian-com.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.73.27 (no PTR)
- 104.26.10.198 (no PTR)
- 104.26.11.198
- 2606:4700:20::681a:ac6
- 2606:4700:20::681a:bc6
- 2606:4700:20::ac43:491b
Mail Server IPs
- 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f802::1 ↩ mail-sj2pr05cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
SOA Record
Raw SOA
brady.ns.cloudflare.com dns.cloudflare.com 2399808564 10000 2400 604800 1800
Primary NS (mname)
brady.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399808564
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
brady.ns.cloudflare.com
haley.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:67.139.233.209/29 ip4:50.203.33.202/32 ip4:50.205.97.0/27 a:gw6.columbian.com include:spf.protection.outlook.com include:secondstreetmail.com include:spfa.mailendo.com include:one.zoho.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
mail._domainkey
s1._domainkey
s2._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
7 records- atlassian-domain-verification=X0B6tXfaaFgqZ4Vr4VdToeWLShHocpWXrYJfFSDaTGGafmhJMxUSbi2LjPUwVIFb
- brevo-code:312a9ab50fca22d3d2e8c119e3346b6b
- db36g9gc10pc82sqb6c2gtpede
- globalsign-domain-verification=526DC5C7D7FA355B4B8E517E18253988
- google-site-verification=ToprzJG24FwcwAOJ1J1LgMFDERh91QD-mM5xr9MbSdo
- lavqj4p78hp407s4g9ar90dba6
- SPFv=spf1 ip4:67.139.233.209/29 ip4:50.203.33.202/32 ip4:50.205.97.0/27 a:gw6.columbian.com include:spf.protection.outlook.com include:secondstreetmail.com include:spfa.mailendo.com include:one.zoho.com ~all
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