Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
cornerstone-companies.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-19 06:14:12 UTC · ↺ Refresh
MX Hostnames
- cornerstonecompanies-com02i.mail.protection.outlook.com
MX Priorities
- cornerstonecompanies-com02i.mail.protection.outlook.com: 10
A / AAAA Records
- 162.159.134.42 (no PTR)
Mail Server IPs
- 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 52.101.42.14 ↩ mail-mw2pr04cu00106.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::3 ↩ mail-sj0pr03cu01703.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.name.com hostmaster.nsone.net 1652211614 7200 3600 604800 300
Primary NS (mname)
ns1.name.com
Admin Email (rname)
hostmaster@nsone.net
Serial
1652211614
Refresh
7200s
Retry
3600s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns4cgs.name.com
ns1psw.name.com
ns2kry.name.com
ns3fqs.name.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:204.186.234.198 ip4:208.58.25.14 ip4:40.65.111.175 include:spf.emailsignatures365.com include:_phishspf.knowbe4.com include:_spf.intacct.com ip4:192.254.121.248 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; rf=afrf; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- apple-domain-verification=E5PyfvjXJe3CBmBk
- brevo-code:62743c51c7dce930505380efc3900936
- intacct-esk=4FED1A42B92EBA4EE053CA06A8C01DAF
- apple-domain-verification=LglgQcKFwWpSVygNRDiBW5HoNlyd0icu4a9HCdwH3OY
- apple-domain-verification=TBPpjj-tojc1oTV60jAeFTC4JORMa0Gqmb8IPAC91EE
- SPFv=spf1 include:spf.protection.outlook.com ip4:204.186.234.198 ip4:208.58.25.14 ip4:40.65.111.175 include:spf.emailsignatures365.com include:_phishspf.knowbe4.com include:_spf.intacct.com ip4:192.254.121.248 -all
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