Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cwdoor.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 16:13:23 UTC · ↺ Refresh
MX Hostnames
- d313927a.ess.barracudanetworks.com
- d313927b.ess.barracudanetworks.com
MX Priorities
- d313927a.ess.barracudanetworks.com: 10
- d313927b.ess.barracudanetworks.com: 20
A / AAAA Records
- 35.215.100.37 ↩ 37.100.215.35.bc.googleusercontent.com
Mail Server IPs
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns19.worldnic.com namehost.worldnic.com 125081813 10800 3600 604800 3600
Primary NS (mname)
ns19.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125081813
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns20.worldnic.com
ns19.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 a:mail.cwdoors.com ip4:50.196.77.237 ip4:67.129.13.154 ip4:207.224.169.162 ip4:12.76.27.42 ip4:107.209.59.93 ip4:24.43.112.172 ip4:24.43.112.162 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- SPFv=spf1 a:mail.cwdoors.com ip4:50.196.77.237 ip4:67.129.13.154 ip4:207.224.169.162 ip4:12.76.27.42 ip4:107.209.59.93 ip4:24.43.112.172 ip4:24.43.112.162 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com -all
- apple-domain-verification=G4gtsgb8ZwdsslYx
- v=BIMI1;l=;a=
- mv639voo1tip7h1pc8hh40e4h3
- kls3ned4k9astagt6bafvl09ni
- YhllaAZf/aF5qoRh8G1mw3TUGj2IAnw9fGrDvzm0m3UB3D7dX0xAGPIea3pmdn00DpnRhRx46MXvzThcTp29og==
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for cwdoor.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits