Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hbu.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 18:02:14 UTC · ↺ Refresh
MX Hostnames
- hbu-edu.mail.protection.outlook.com
MX Priorities
- hbu-edu.mail.protection.outlook.com: 0
A / AAAA Records
- 23.185.0.3 (no PTR)
- 2620:12a:8000::3 (no PTR)
- 2620:12a:8001::3
Mail Server IPs
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.40.6 ↩ mail-cy1pr03cu00106.inbound.protection.outlook.com
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f909:: ↩ mail-bn6pr04cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns20.digicertdns.com dns.digicertdns.com 2009011166 43200 3600 1209600 180
Primary NS (mname)
ns20.digicertdns.com
Admin Email (rname)
dns@digicertdns.com
Serial
2009011166
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns11.dnsmadeeasy.com
ns14.dnsmadeeasy.com
ns15.dnsmadeeasy.com
ns12.dnsmadeeasy.com
ns13.dnsmadeeasy.com
ns10.dnsmadeeasy.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:secure.giftlegacy.com include:hobsonsmail.com include:sendgrid.net ip4:66.85.69.0/24 ip4:216.146.32.0/23 ip4:208.76.62.0/23 ip4:208.93.120.0/22 ip4:64.132.88.34 ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._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
7 records- SPFv=spf1 include:spf.protection.outlook.com include:secure.giftlegacy.com include:hobsonsmail.com include:sendgrid.net ip4:66.85.69.0/24 ip4:216.146.32.0/23 ip4:208.76.62.0/23 ip4:208.93.120.0/22 ip4:64.132.88.34 ~all
- _globalsign-domain-verification=5hJG-JUvtik7Uc7X-p1IfVkmMYWxUxW5craHxD_5ac
- adobe-idp-site-verification=7370e7b776a2bc30059f859c97e9413fd84257ebcbfa03408d65cd4986a40588
- apple-domain-verification=LL8vmmQNlPxTds5z
- google-site-verification=iE9Lw3ESPIvpf1fNRfLrmZdFLA6UjmJziyTyKIz7YDI
- backv=spf1 include:sendgrid.net ~all
- DKIMv=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzef//xSR0zqBf7kl6E2dvoQ0F30RjMO2EiASAeoJX9dKOjcPotqR0kixDPDvfLjJ45eOQHQgtIj9JWfP3w6FC29Sc1J6X7xTXGO0pSJFK23qJAc5Lv65gYTuWwRBAbljRy5w7Ix/6DUF+RfohHbaLdq6tK5KPUkRVbHT+6JPRa3/bIl+/A4s6o8EqnQ87myprTsAqs+ocWXBbCCkm5Qhd5kmWOluMT0pUYrZbiuX/+CSSOfGa641/YpagxJQhMuimC1CyqtY+lbu5raSRWr4J1G/YJe49cEQ7EkAnPW4L+cXi55WW22gt0FuFpJRJZWK4Tn/2W/XCYZvDj/2YzbeCwIDAQAB
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