Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cornerstone.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 03:05:11 UTC · ↺ Refresh
MX Hostnames
- cornerstone-edu.mail.protection.outlook.com
MX Priorities
- cornerstone-edu.mail.protection.outlook.com: 10
A / AAAA Records
- 162.159.134.42 (no PTR)
Mail Server IPs
- 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
- 2a01:111:f403:c902::4 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f908:: ↩ mail-bn1pr21cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f909:: ↩ mail-bn6pr04cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns0.ussignalcom.net postmaster.ussignalcom.net 2012121740 3600 3600 2419200 900
Primary NS (mname)
ns0.ussignalcom.net
Admin Email (rname)
postmaster@ussignalcom.net
Serial
2012121740
Refresh
3600s
Retry
3600s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
ns3.ussignalcom.net
ns1.ussignalcom.net
ns2.ussignalcom.net
ns4.ussignalcom.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:spf.protection.outlook.com include:outboundmail.blackbaud.net ip4:198.62.73.35 ip4:52.159.98.159 ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
google._domainkey
selector1._domainkey
selector2._domainkey
✓ Public key: 132 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
11 records- apple-domain-verification=Oj7FkNL5YAHMOoDp
- BPL=2973577
- ca3-2d01d11ea4ac493e96144755c8147a24
- google-site-verification=VSAvp95DU2t1DwsUbdb76238A7jcFLggrZcPlUkeZuo
- google-site-verification=Ft9QgVw0wYmBH4LgMwelHL4EXJ2jX_nKcvHlBZSP_hM
- google-site-verification=dsUVjKpIWlk4wl6wBHPXy8PJifWR2jwhGXJlqXPcX0k
- google-site-verification=NuVQopSIcJTCUkDVeo7qXte5kfxGDwSIZ8Qe5xVnDZQ
- google-site-verification=BgOkCf-ICQ6U2CupUdI-Lf9RedexSEZxSHgHZ8tTtFs
- SPFv=spf1 include:_spf.google.com include:spf.protection.outlook.com include:outboundmail.blackbaud.net ip4:198.62.73.35 ip4:52.159.98.159 ~all
- solarwinds-service0desk-verification=ea5d85b0b2c55ecdfc53eab8a5c2ebe7
- facebook-domain-verification=06o2hgu46g2s2nfp22kzo1hxfy8q9x
Full email verification for cornerstone.edu
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