Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
csu.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 06:36:44 UTC · ↺ Refresh
MX Hostnames
- csu-org.mail.protection.outlook.com
MX Priorities
- csu-org.mail.protection.outlook.com: 0
A / AAAA Records
- 199.60.103.166 (no PTR)
- 199.60.103.66 (no PTR)
Mail Server IPs
- 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
- 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
- 52.101.42.14 ↩ mail-mw2pr04cu00106.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.csu.org unixmail.csu.org 2026030403 3600 1800 604800 3600
Primary NS (mname)
dns1.csu.org
Admin Email (rname)
unixmail@csu.org
Serial
2026030403
Refresh
3600s
Retry
1800s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns4.csu.org
dns1.csu.org
dns2.csu.org
dns3.csu.org
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_u.csu.org._spf.smart.ondmarc.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; fo=1; ri=3600; rua=mailto:[email protected]; ruf=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
5 records- SPFv=spf1 include:_u.csu.org._spf.smart.ondmarc.com ~all
- google-site-verification=qZlTOeGwwE54sLJTDQPonoKHwWH-yGaMUW_A0OVF4rU
- _5myrldzyyp1s6b3d0aifm4ei6qk32cr
- MS=ms79709517
- 5l5tt6j41l4471lc90j7850n5sx09kfg
Full email verification for csu.org
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