Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
knnidiomas.com.br
Yes
✓ Yes
Mailgun
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 02:14:32 UTC · ↺ Refresh
MX Hostnames
- mail.knnidiomas.com.br
- mxa.mailgun.org
- mxb.mailgun.org
MX Priorities
- mxa.mailgun.org: 10
- mxb.mailgun.org: 10
- mail.knnidiomas.com.br: 0
A / AAAA Records
- 76.76.21.21 (no PTR)
Mail Server IPs
- 34.160.63.108 ↩ 108.63.160.34.bc.googleusercontent.com
- 167.235.39.23 ↩ s23.sh2.com.br
SOA Record
Raw SOA
george.ns.cloudflare.com dns.cloudflare.com 2400556713 10000 2400 604800 1800
Primary NS (mname)
george.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400556713
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
miki.ns.cloudflare.com
george.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:167.235.39.23 include:mailgun.org include:_spf.rdstation.com.br include:sendgrid.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
default._domainkey
s1._domainkey
s2._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
3 records- SPFv=spf1 ip4:167.235.39.23 include:mailgun.org include:_spf.rdstation.com.br include:sendgrid.net -all
- google-site-verification=FcyCOcvXnKH69E9weZscwyJbOBiRSIT0QXX0kX1aW2A
- google-site-verification=uD4chbxxidWMgfGZjbK68YpPbfXi097w7ildx1JBxK4
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