Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dunning.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 16:09:22 UTC · ↺ Refresh
MX Hostnames
- mx.uhserver.com
MX Priorities
- mx.uhserver.com: 10
A / AAAA Records
- 137.117.106.199 (no PTR)
Mail Server IPs
- 200.147.36.29 ↩ mx.uhserver.com
SOA Record
Raw SOA
d.sec.dns.br hostmaster.registro.br 2026071003 345600 900 604800 900
Primary NS (mname)
d.sec.dns.br
Admin Email (rname)
hostmaster@registro.br
Serial
2026071003
Refresh
345600s
Retry
900s
Expire
604800s
Minimum TTL
900s
Nameservers (NS)
d.sec.dns.br
f.sec.dns.br
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.whservidor.com ?all
📊 DNS lookups: 1/10
? Neutral (?all) — no 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
✓ 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
3 records- MS=ms40796019
- SPFv=spf1 include:spf.whservidor.com ?all
- SPFv=spf1 include:_spf.rdstation.com.br include:sendgrid.net ~all
Full email verification for dunning.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits