Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cu.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-22 23:11:35 UTC · ↺ Refresh
MX Hostnames
- cu-edu.mail.protection.outlook.com
MX Priorities
- cu-edu.mail.protection.outlook.com: 10
A / AAAA Records
- 23.185.0.3 (no PTR)
- 2620:12a:8001::3 (no PTR)
- 2620:12a:8000::3
Mail Server IPs
- 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 52.101.11.17 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
- 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c946::3 ↩ mail-ch0pr04cu00603.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
SOA Record
Raw SOA
ns9.cu.edu ecs-infrastructure.cu.edu 2026031802 1800 300 604800 300
Primary NS (mname)
ns9.cu.edu
Admin Email (rname)
ecs-infrastructure@cu.edu
Serial
2026031802
Refresh
1800s
Retry
300s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns12.cu.edu
ns10.cu.edu
ns13.cu.edu
ns9.cu.edu
ns11.cu.edu
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=cu.edu.on.autospf.email
📊 DNS lookups: 1/10
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected], mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected], mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
k1._domainkey
s1._domainkey
s2._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
13 records- _globalsign-domain-verification=HhVeiSKIzpErKs0wHEAx0o32Z0civrS6plrUOt4M-B
- openai-domain-verification=dv-9jI2YpQaR9499Q0ulBsMn5CG
- google-site-verification=TvCMRGZn8yRSf8fjN4KGTGsSIOheS1uAX4kNvtjQBcA
- SPFv=spf1 redirect=cu.edu.on.autospf.email
- 1password-site-verification=HUTGTY3IQ5CGFBFFZSVPDZTH7Y
- aY1MJQkpCIxJn6wwMPnMuChcoRGnFjDmdt25lVIx6Qe5r0bwvtn1HSZiR3LHraXOnnubLy1YdLvaAG9MLvWZHw==
- SFMC-xe9G0OU862W2jbGpqi9eMwAxsIVjt3WpKzQoRxgy
- apple-domain-verification=BSVxaFpSdcRib9W6
- cXbeJ4UDJBg+cxayxIvAK7sNlob/rhFmsvARSfdngBDvXzA9gnPBaF1leueKYuSy6wdUw8rtssKey/GXMolhiQ==
- facebook-domain-verification=hk6531shxfomy8mnyv13ugtq5ekonl
- pardot654853=81d752e752c183e4bd5b21755d75a444a9399bb49c5d9c3f9819199e03158082
- SFMC-nCqU91NmdDFREOVQ3Vcqns0MCHTHXiY2MQJOkdMs
- MS=35F66365F292BD92898C1F9E92E0B839769891F8
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