Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
poligran.edu.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 01:19:16 UTC · ↺ Refresh
MX Hostnames
- poligran-edu-co.mail.protection.outlook.com
MX Priorities
- poligran-edu-co.mail.protection.outlook.com: 0
A / AAAA Records
- 104.26.3.107 (no PTR)
- 172.67.74.36 (no PTR)
- 104.26.2.107
- 2606:4700:20::681a:26b
- 2606:4700:20::681a:36b
- 2606:4700:20::ac43:4a24
Mail Server IPs
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f908:: ↩ mail-bn1pr21cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
glen.ns.cloudflare.com dns.cloudflare.com 2399415759 10000 2400 604800 1800
Primary NS (mname)
glen.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399415759
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
glen.ns.cloudflare.com
meg.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:23.143.96.1 ip4:190.131.241.185 ip4:66.231.226.1 ip4:208.39.105.123 ip4:45.192.18.4 include:spf.protection.outlook.com include:servers.mcsv.net include:amazonses.com include:44653797.spf02.hubspotemail.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; sp=reject; aspf=s; adkim=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
k1._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- SPFv=spf1 ip4:23.143.96.1 ip4:190.131.241.185 ip4:66.231.226.1 ip4:208.39.105.123 ip4:45.192.18.4 include:spf.protection.outlook.com include:servers.mcsv.net include:amazonses.com include:44653797.spf02.hubspotemail.net -all
- verification=weIV55-iaCIMn6N5GcTw7V9XFTSGreYEQ1L7OBEaXs4
- 4598f18de0a26bd3ac30ccecb235d34fac3c23545d9fc75375ed6c410ce5f103
- 921r9kmbgutrrob8jr8jgbd7gj
- h1g6u4v5l2quetrkov23if14jt
- include:44653797.spf02.hubspotemail.net
- upmich0ekefanhnnmhhfbj95d9
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