Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
lamar.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 01:11:48 UTC · ↺ Refresh
MX Hostnames
- lamar-edu.mail.protection.outlook.com
MX Priorities
- lamar-edu.mail.protection.outlook.com: 0
A / AAAA Records
- 147.26.255.248 (no PTR)
- 140.158.64.248 ↩ montageeventcenter.com
Mail Server IPs
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c931::1 ↩ mail-sa9pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.lamar.edu system.dns1.lamar.edu 2026031901 300 300 1209600 300
Primary NS (mname)
dns1.lamar.edu
Admin Email (rname)
system@dns1.lamar.edu
Serial
2026031901
Refresh
300s
Retry
300s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
dns1.lamar.edu
geri.angelo.edu
dns2.lamar.edu
SPF Record
✓ Strict (-all)
v=spf1 ip4:140.158.60.0/24 ip4:140.158.64.0/23 ip4:147.26.255.0/24 ip4:140.158.4.0/24 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ 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- adobe-idp-site-verification=cc2bbc98-bdfa-4ddc-8c99-a2fde1694682
- smartsheet-site-validation=gLxLFcYbSxfz3HvsDr_m1eqrDL8d68S5
- MS=47058CE6F6D9B1081E9F611D3D71F4F6133D836B
- SPFv=spf1 ip4:140.158.60.0/24 ip4:140.158.64.0/23 ip4:147.26.255.0/24 ip4:140.158.4.0/24 include:spf.protection.outlook.com -all
- jamf-site-verification=qZRKvWk5X_1vHzx05GiY1A
- atlassian-domain-verification=XjYX1Kh8aGOzZz1ufbbxxPhMawainzVoJrNTaYACLNtSd3vu0jjP3XYADVCkDKhG
- apple-domain-verification=0ctYfGptDF62Rtbz
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