ctk.org

Valid Email Server
Domain Lookup › ctk.org

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
ctk.org
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-14 01:58:14 UTC · ↺ Refresh

MX Hostnames

  • mx.junkemailfilter.net
  • dummy0.junkemailfilter.com
  • dummy1.junkemailfilter.com
  • mx.junkemailfilter.org
  • mx.junkemailfilter.com

MX Priorities

  • mx.junkemailfilter.net: 30
  • mx.junkemailfilter.org: 40
  • dummy1.junkemailfilter.com: 50
  • dummy0.junkemailfilter.com: 10
  • mx.junkemailfilter.com: 20

A / AAAA Records

  • 52.21.5.176 ↩ ec2-52-21-5-176.compute-1.amazonaws.com
  • 35.171.57.87

Mail Server IPs

  • 184.105.182.41 ↩ euclid.junkemailfilter.com
  • 184.105.182.40 ↩ euclid.junkemailfilter.com
  • 184.105.182.226 (no PTR)
  • 184.105.182.225 (no PTR)
  • 184.105.182.227 (no PTR)
  • 184.105.182.216 (no PTR)
  • 184.105.182.215 (no PTR)
  • 184.105.182.217 (no PTR)
  • 184.105.182.185 ↩ 185-he.filtered.junkemailfilter.com

SOA Record

Raw SOA ns3.hostasaurus.com hostmaster.hostasaurus.com 1772804189 16384 2048 1048576 300
Primary NS (mname)
ns3.hostasaurus.com
Admin Email (rname)
hostmaster@hostasaurus.com
Serial
1772804189
Refresh
16384s
Retry
2048s
Expire
1048576s
Minimum TTL
300s

Nameservers (NS)

ns4.hostasaurus.com
ns1.hostasaurus.com
ns2.hostasaurus.com
ns3.hostasaurus.com

SPF Record

✓ Strict (-all)
v=spf1 a:deda151.mivamerchant.net include:e2ma.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

1 record
  • SPFv=spf1 a:deda151.mivamerchant.net include:e2ma.net -all
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