Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
criticalsystemsinc.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-19 07:44:22 UTC · ↺ Refresh
MX Hostnames
- mx2-us1.ppe-hosted.com
- mx1-us1.ppe-hosted.com
MX Priorities
- mx1-us1.ppe-hosted.com: 1
- mx2-us1.ppe-hosted.com: 2
A / AAAA Records
- 185.230.63.171 ↩ unalocated.63.wixsite.com
- 185.230.63.107 ↩ unalocated.63.wixsite.com
- 185.230.63.186 ↩ unalocated.63.wixsite.com
Mail Server IPs
- 67.231.154.162 ↩ mx1-us1.ppe-hosted.com
- 148.163.129.50 ↩ mx1-us1.ppe-hosted.com
- 148.163.129.51 ↩ mx2-us1.ppe-hosted.com
- 67.231.154.163 ↩ mx2-us1.ppe-hosted.com
SOA Record
Raw SOA
jule.ns.cloudflare.com dns.cloudflare.com 2402650054 10000 2400 604800 1800
Primary NS (mname)
jule.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2402650054
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
quentin.ns.cloudflare.com
jule.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.wix.com a:dispatch-us.ppe-hosted.com ip4:96.18.67.186 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 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
2 records- google-site-verification=lD120yAGIooPDfXAeuxnkXmZBMt6ygjtSPuCATR0a2M
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.wix.com a:dispatch-us.ppe-hosted.com ip4:96.18.67.186 -all
Full email verification for criticalsystemsinc.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits