Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
usantotomas.edu.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 08:28:22 UTC · ↺ Refresh
MX Hostnames
- usantotomas-edu-co.mail.protection.outlook.com
MX Priorities
- usantotomas-edu-co.mail.protection.outlook.com: 0
A / AAAA Records
- 199.60.103.184 (no PTR)
- 199.60.103.84 (no PTR)
Mail Server IPs
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:f908:: ↩ mail-bn1pr21cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
keyla.ns.cloudflare.com dns.cloudflare.com 2399426678 10000 2400 604800 1800
Primary NS (mname)
keyla.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399426678
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
watson.ns.cloudflare.com
keyla.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:201.234.135.214 ip4:201.234.135.219 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;pct=100;rua=mailto:[email protected],mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected];fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ 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- SPFv=spf1 include:spf.protection.outlook.com ip4:201.234.135.214 ip4:201.234.135.219 -all
- MS=FFA1B7C2BDC8BACF69B1434794D80867B0E1F5E1
- _betvk0bcec7ubxxkxvzurae7enh3kk8
- sophos-domain-verification=a5960ea77fcaf9d11afd625a6cfbdf0caf7dc4f569dc7bc85f91b3060c5ec6e7
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