Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kornerstoneadmin.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 03:33:33 UTC · ↺ Refresh
MX Hostnames
- mxa-00720001.gslb.pphosted.com
- kornerstoneadmin-com.mail.protection.outlook.com
- mxb-00720001.gslb.pphosted.com
MX Priorities
- mxa-00720001.gslb.pphosted.com: 10
- mxb-00720001.gslb.pphosted.com: 10
- kornerstoneadmin-com.mail.protection.outlook.com: 100
A / AAAA Records
- 172.67.138.62
- 104.21.26.179
- 2606:4700:3031::6815:1ab3
- 2606:4700:3035::ac43:8a3e
Mail Server IPs
- 148.163.139.34 ↩ mx0b-00720001.pphosted.com
- 148.163.135.26 ↩ mx0a-00720001.pphosted.com
- 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
- 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
- 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
SOA Record
Raw SOA
lisa.ns.cloudflare.com dns.cloudflare.com 2399138785 10000 2400 604800 1800
Primary NS (mname)
lisa.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399138785
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
norm.ns.cloudflare.com
lisa.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:_spf.dealersocket.com include:sendgrid.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
5 records- apple-domain-verification=NT72XEtqmXKidmtR
- fc1g8dwbfnqrvh88gj0kqzm13jt749rl
- SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:_spf.dealersocket.com include:sendgrid.net -all
- 7l3md7crnwx5d8t0618qcgvnyxc42vv5
- MS=ms64313889
Full email verification for kornerstoneadmin.com
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