Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cornerstoneauto.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 17:41:11 UTC · ↺ Refresh
MX Hostnames
- relay.helionmail.com
- cornerstoneauto-com.mail.protection.outlook.com
MX Priorities
- cornerstoneauto-com.mail.protection.outlook.com: 20
- relay.helionmail.com: 10
A / AAAA Records
- 54.243.57.127
Mail Server IPs
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
- 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f802::2 ↩ mail-sj2pr05cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
- 13.58.101.136 ↩ helion1.spamtitan.com
- 52.15.224.74 ↩ helion2.spamtitan.com
- 3.135.127.171
SOA Record
Raw SOA
ns-cloud-e1.googledomains.com cloud-dns-hostmaster.google.com 31 21600 3600 259200 300
Primary NS (mname)
ns-cloud-e1.googledomains.com
Admin Email (rname)
cloud-dns-hostmaster@google.com
Serial
31
Refresh
21600s
Retry
3600s
Expire
259200s
Minimum TTL
300s
Nameservers (NS)
ns-cloud-e4.googledomains.com
ns-cloud-e3.googledomains.com
ns-cloud-e2.googledomains.com
ns-cloud-e1.googledomains.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:dospf.simplepart.com include:_spf.google.com include:email.freshdesk.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 216 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
3 records- google-site-verification=zf9gAI8-D6QS-f0snRH4CkrY1ct7A1OGdwI-qZi2L7E
- google-site-verification=WTZBqR6JgjMxcQtc61lZJDKwYdZOcvLto6Kt6N8EvuU
- SPFv=spf1 include:spf.protection.outlook.com include:dospf.simplepart.com include:_spf.google.com include:email.freshdesk.com ~all
Full email verification for cornerstoneauto.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits