Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
colsondentalgroup.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 09:10:34 UTC · ↺ Refresh
MX Hostnames
- mx1-hosting.jellyfish.systems
- mx2-hosting.jellyfish.systems
- mx3-hosting.jellyfish.systems
MX Priorities
- mx1-hosting.jellyfish.systems: 10
- mx2-hosting.jellyfish.systems: 20
- mx3-hosting.jellyfish.systems: 30
A / AAAA Records
- 172.67.139.100 (no PTR)
- 104.21.65.21 (no PTR)
- 2606:4700:3030::ac43:8b64 (no PTR)
- 2606:4700:3035::6815:4115 (no PTR)
Mail Server IPs
- 162.255.118.28 ↩ oxse3a.privateemail.com
- 162.255.118.29 ↩ oxse2b.privateemail.com
- 162.255.118.13 ↩ mx3-hosting.jellyfish.systems
SOA Record
Raw SOA
eric.ns.cloudflare.com dns.cloudflare.com 2397270563 10000 2400 604800 1800
Primary NS (mname)
eric.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397270563
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
eric.ns.cloudflare.com
pam.ns.cloudflare.com
SPF Record
✗ MissingNo SPF record — domain is unprotected against spoofing.
⚠ No SPF record found. Email servers cannot verify authorized senders.
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- MAltYWlsLmNvbHNvbmRlbnRhbGdyb3VwLmNvbS4K
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