Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sei.cmu.edu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 22:54:53 UTC · ↺ Refresh
MX Hostnames
- tilton.sei.cmu.edu
- tingley.sei.cmu.edu
MX Priorities
- tilton.sei.cmu.edu: 10
- tingley.sei.cmu.edu: 10
A / AAAA Records
- 147.72.252.240 ↩ resources.sei.cmu.edu
Mail Server IPs
- 147.72.252.13 ↩ tilton.sei.cmu.edu
- 147.72.252.12 ↩ tingley.sei.cmu.edu
SOA Record
Raw SOA
ns-202.awsdns-25.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-202.awsdns-25.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-750.awsdns-29.net
ns-1216.awsdns-24.org
ns-1613.awsdns-09.co.uk
ns-202.awsdns-25.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:147.72.252.0/27 include:spf.protection.office365.us include:servers.mcsv.net include:docebosaas.com a:campaigns06.imperisoft.com ?all
📊 DNS lookups: 4/10
? Neutral (?all) — no enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; adkim=r; aspf=r; fo=0; rf=afrf; rua=mailto:[email protected]; ruf=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
k1._domainkey
✓ Public key: 216 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
3 records- SPFv=spf1 ip4:147.72.252.0/27 include:spf.protection.office365.us include:servers.mcsv.net include:docebosaas.com a:campaigns06.imperisoft.com ?all
- Zmg5Jp+GDaLcEv+uMTaY3+aTf8/gStSFtCmW2mjfDIkQa42GqXpfcJVSJITa87EqwNljpYARZpE8vBc9vUydIg==
- google-site-verification=PXiNjXrNtpL31oZ3c5xffLvrzlbmCXiqG_cvDeC9PiA
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