Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
siebelschool.illinois.edu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 14:02:06 UTC · ↺ Refresh
MX Hostnames
- incoming-relays.illinois.edu
MX Priorities
- incoming-relays.illinois.edu: 5
A / AAAA Records
- 130.126.151.25 ↩ engr-sites-04.engr.illinois.edu
Mail Server IPs
- 148.163.139.28 ↩ mx0b-00007101.pphosted.com
- 148.163.135.28 ↩ mx0a-00007101.pphosted.com
SOA Record
Raw SOA
ipam1.techservices.illinois.edu dns-admin.illinois.edu 23 3600 900 1209600 60
Primary NS (mname)
ipam1.techservices.illinois.edu
Admin Email (rname)
dns-admin@illinois.edu
Serial
23
Refresh
3600s
Retry
900s
Expire
1209600s
Minimum TTL
60s
Nameservers (NS)
dns2.illinois.edu
dns1.illinois.edu
dns3.illinois.edu
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=_spf.illinois.edu
📊 DNS lookups: 1/10
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 redirect=_spf.illinois.edu
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