think4.com.br

Valid Email Server
Domain Lookup › think4.com.br

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
think4.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-23 20:08:53 UTC · ↺ Refresh

MX Hostnames

  • mx-ha.cfr.net.br

MX Priorities

  • mx-ha.cfr.net.br: 0

A / AAAA Records

  • 200.150.197.29 (no PTR)

Mail Server IPs

  • 168.0.133.10 ↩ mx-ha.skymail.net.br

SOA Record

Raw SOA ns1.locaweb.com.br hostmaster.locaweb.com.br 2022031001 3600 600 1209600 3600
Primary NS (mname)
ns1.locaweb.com.br
Admin Email (rname)
hostmaster@locaweb.com.br
Serial
2022031001
Refresh
3600s
Retry
600s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

ns1.locaweb.com.br
ns2.locaweb.com.br
ns3.locaweb.com.br

SPF Record

✓ Soft Fail (~all)
v=spf1 include:cfr.net.br include:locaweb.com.br ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

DKIM Selectors

✗ None detected

No 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 include:cfr.net.br include:locaweb.com.br ~all
Full email verification for think4.com.br

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits