Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
csulb.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 09:17:25 UTC · ↺ Refresh
MX Hostnames
- csulb-edu.mail.protection.outlook.com
MX Priorities
- csulb-edu.mail.protection.outlook.com: 10
A / AAAA Records
- 134.139.19.21 ↩ rh9-web.csulb.edu
Mail Server IPs
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
- 52.101.40.4 ↩ mail-cy5pr03cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
nsz1.csulb.edu net-engr.csulb.edu 21771 10800 3600 2419200 900
Primary NS (mname)
nsz1.csulb.edu
Admin Email (rname)
net-engr@csulb.edu
Serial
21771
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
ns1.csulb.edu
nsz1.csulb.edu
ns4.cenic.org
ns3.csulb.edu
ns6.cenic.org
ns.csulb.edu
ns5.cenic.org
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:137.145.0.0/16 ip4:208.75.120.0/22 ip4:64.72.147.142 ip4:64.74.237.230/31 ip4:216.147.212.20/30 include:spf.protection.outlook.com include:spf1.formassembly.com include:_spf1.csulb.edu ~all
📊 DNS lookups: 3/10
~ 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
✓ 2 found
selector1._domainkey
selector2._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
8 records- SPFv=spf1 ip4:137.145.0.0/16 ip4:208.75.120.0/22 ip4:64.72.147.142 ip4:64.74.237.230/31 ip4:216.147.212.20/30 include:spf.protection.outlook.com include:spf1.formassembly.com include:_spf1.csulb.edu ~all
- MS=ms30245482
- TzHDVhV5vRWU1vsZBn7db0v/LGZsYPuBipAiFFpi9sN5lIUWo6O1bZXgVi6l/pa27tOA4Du/vMccHrGczAnDkg==
- google-site-verification=xFz2M3PnLk1C_k4grzSdpJEyjvgXHw5Cf32n_AD_9vM
- docusign=2346fb75-e80d-43e9-8699-3d3029c2eeba
- docusign=e61a12a7-5ac3-4f45-b57f-29216be06e38
- sending_domain318521=236ac8d993106edf9f9ab2d6ef8fbe4fa41f018457dcf7f17130a1a0f6718dc4
- DcPmKt2FsDwyhRn1IjaAiV530+9ViRA/SW9jv43Zd/lVq0ECnjxHfU5SE+7/vfuukpBU+3YA2x+0eeZQH1qkXg==
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