Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
crowneknox.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 16:33:33 UTC · ↺ Refresh
MX Hostnames
- mail.symetrixnet.com
MX Priorities
- mail.symetrixnet.com: 0
A / AAAA Records
- 69.20.82.96 (no PTR)
Mail Server IPs
- 143.59.231.36 ↩ mail.symetrixnet.com
SOA Record
Raw SOA
ns17.domaincontrol.com dns.jomax.net 2024052900 28800 7200 604800 3600
Primary NS (mname)
ns17.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2024052900
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns17.domaincontrol.com
ns18.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 mx -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; rf=afrf; pct=100; ri=86400
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx -all
Full email verification for crowneknox.com
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