Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cbt.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-27 23:27:07 UTC · ↺ Refresh
MX Hostnames
- cbt-edu.mail.protection.outlook.com
MX Priorities
- cbt-edu.mail.protection.outlook.com: 0
A / AAAA Records
- 45.60.22.59 (no PTR)
- 45.60.98.59 (no PTR)
Mail Server IPs
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 52.101.11.3 ↩ mail-sn1pr0501cu00103.inbound.protection.outlook.com
- 52.101.9.11 ↩ mail-bl2pr04cu00103.inbound.protection.outlook.com
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f804::2 ↩ mail-co1pr05cu00402.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1393.awsdns-46.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1393.awsdns-46.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-965.awsdns-56.net
ns-1393.awsdns-46.org
ns-1649.awsdns-14.co.uk
ns-354.awsdns-44.com
SPF Record
✓ Strict (-all)
v=spf1 include:spfa.cpmails.com include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:50364199.spf10.hubspotemail.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._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
8 records- _jp073778rmhszinsankdny2ujrelju6
- _ml55enl8tl8acyu0bmnrhfcyo5lx7k6
- sophos-domain-verification=c6e938fc683d07a90c59f9f6bd6441dec3a1c5e9cb285d5487f5cf8c3055b988
- SPFv=spf1 include:spfa.cpmails.com include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:50364199.spf10.hubspotemail.net -all
- MS=C5A71457992B4AAF831EDA63563D4262DBB5C5C8
- _18jeaiy9o2tnqixqmotqokqk5y2h4ph
- _f7k18ak4s3t4vcxj1m0d87iuudpf7ps
- _globalsign-domain-verification=0kQVxhOZuIPFXnwQQiQK_lFmpQB_hc1DWnLLcQUHXO
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