Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
checkpointsystems.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 06:52:27 UTC · ↺ Refresh
MX Hostnames
- checkpointsystems-com.mail.protection.outlook.com
MX Priorities
- checkpointsystems-com.mail.protection.outlook.com: 5
A / AAAA Records
- 104.18.20.237 (no PTR)
- 104.18.21.237 (no PTR)
- 2606:4700::6812:15ed
- 2606:4700::6812:14ed
Mail Server IPs
- 52.101.8.42 ↩ mail-dm6pr03cu00402.inbound.protection.outlook.com
- 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.194.15 ↩ mail-ch4pr21cu00107.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
trevor.ns.cloudflare.com dns.cloudflare.com 2397249250 10000 2400 604800 1800
Primary NS (mname)
trevor.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397249250
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ulla.ns.cloudflare.com
trevor.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com ip4:35.197.240.138 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict 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
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- MS=ms87670778
- cisco-ci-domain-verification=54c0fbc214fb72d07e3e018df753d49b06276b7f1efbb8ea2e4f859ddd2c6195
- kk81pq42tluvncb1k6dnd9iu3j
- ln13vbocale6q16ue9pdbljojq
- SPFv=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com ip4:35.197.240.138 -all
Full email verification for checkpointsystems.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits