Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
trinitydc.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 02:08:31 UTC · ↺ Refresh
MX Hostnames
- trinitydc-edu.mail.protection.outlook.com
MX Priorities
- trinitydc-edu.mail.protection.outlook.com: 10
A / AAAA Records
- 35.197.23.17 ↩ 17.23.197.35.bc.googleusercontent.com
Mail Server IPs
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 52.101.40.4 ↩ mail-cy5pr03cu00204.inbound.protection.outlook.com
- 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
- 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-206.awsdns-25.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-206.awsdns-25.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1549.awsdns-01.co.uk
ns-206.awsdns-25.com
ns-900.awsdns-48.net
ns-1350.awsdns-40.org
SPF Record
✓ Strict (-all)
v=spf1 a:smtp.trinitydc.edu ip4:192.30.51.80 include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
13 records- adobe-idp-site-verification=66dbe5d76e441b9e5c794b91173875d919084f69c8910e9779dc596c50eae71b
- apple-domain-verification=ah1Tt8gtItgGwxlL
- atlassian-domain-verification=mYM7wjQzuUm4y1VoazamH/DQGq1MHdkxaYNdNDkDrfq75Bn7RlpaHMBWhnwU9bRi
- atlassian-sending-domain-verification=db5fea94-e5f1-476b-b462-776fe3d19c51
- google-site-verification=BBip028j9XttAKvbsIIPke912-m2-7RIcann-IBhTXs
- google-site-verification=bqLyvRXG1v0y1tl1QEl7C722iWTuna6Q4uX27JFawFk
- gt7uo4penjcvr5fvtpm11rcig0
- v=msv1 t=58814DAD-6305-4183-AB2C-C98248B8CE9B
- SPFv=spf1 a:smtp.trinitydc.edu ip4:192.30.51.80 include:spf.protection.outlook.com -all
- vm1q2gue119lhc5b5aenjn3ral
- 3atpd9dlgsl3smjsglvbr65ge1
- JsiiAzHgtKjbP6j+vAEsExC+7gymzYwXlT0v0WOAqj+MFx8uVgwkZ5hr60lRPF0fIH6x9bCY/rEmbxKFYjIdag==
- OWa9H1ZdPeMOgpg4w6r3ROt4cR6rap4LxNvdWeCoSpDc7gMDgyv07CmPabjQPfNXTYHZ8JJL1wVJaYpKCV4qSA==
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