Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
excelsior.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 02:15:04 UTC · ↺ Refresh
MX Hostnames
- excelsior-edu.mail.protection.outlook.com
MX Priorities
- excelsior-edu.mail.protection.outlook.com: 0
A / AAAA Records
- 52.207.24.116 ↩ ec2-52-207-24-116.compute-1.amazonaws.com
- 54.152.137.66 ↩ ec2-54-152-137-66.compute-1.amazonaws.com
- 18.208.52.62
- 52.71.153.106
Mail Server IPs
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:c946::3 ↩ mail-ch0pr04cu00603.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1517.awsdns-61.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1517.awsdns-61.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1517.awsdns-61.org
ns-1706.awsdns-21.co.uk
ns-365.awsdns-45.com
ns-919.awsdns-50.net
SPF Record
✓ Strict (-all)
v=spf1 mx include:spf.protection.outlook.com include:spfa.excelsior.edu include:spfb.excelsior.edu -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected],mailto:[email protected]; ruf=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
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- SPFv=spf1 mx include:spf.protection.outlook.com include:spfa.excelsior.edu include:spfb.excelsior.edu -all
- google-site-verification=AELawqXZCvs7D9UbCiBXHOPPTX8WL6klLEzzjTUGk8g
- google-site-verification=rqzcssaBR4Dsf7gjk7u_zmAhrt9UNrkSaXyrKVOcgRM
- openai-domain-verification=dv-lyjlZDyCMW2nhDdnYx12xDlp
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