Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
siu.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 10:04:46 UTC · ↺ Refresh
MX Hostnames
- siu-edu.mail.protection.outlook.com
MX Priorities
- siu-edu.mail.protection.outlook.com: 0
A / AAAA Records
- 131.230.21.130 ↩ plesk-sites1.web.siu.edu
Mail Server IPs
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.siu.edu network-engineering.siu.edu 2026033001 600 300 172800 3600
Primary NS (mname)
ns1.siu.edu
Admin Email (rname)
network-engineering@siu.edu
Serial
2026033001
Refresh
600s
Retry
300s
Expire
172800s
Minimum TTL
3600s
Nameservers (NS)
ns3.siu.edu
ns1.siu.edu
ns5.siu.edu
ns4.siu.edu
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:131.230.0.0/16 include:spf.protection.outlook.com include:sendgrid.net include:a._spf.brightspace.com ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; fo=1; rua=mailto:[email protected],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],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- e2ma-verification=702eb
- apple-domain-verification=UWcwBIUNhBK-htVraea_MSmuyduELwRhhWx2MFJw2OE
- apple-domain-verification=wLe0m12b2Z4EunYa
- HoxTnhzvBYZ82oYiTjotA/8BUKC/NJEHjQL5Yvtwo15uaVyH+vsDHa5xmjKxnwtDtJloUn2AHIlLstIoCDWMLg==
- e2ma-verification=19bbb
- SPFv=spf1 a mx ip4:131.230.0.0/16 include:spf.protection.outlook.com include:sendgrid.net include:a._spf.brightspace.com ~all
- adobe-idp-site-verification=8e699fe7391a61d469bd007a3295c397905fb566b98db27d355d3483eac0a86e
- MS=ms20230666
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