Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
trdsystem.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 01:13:22 UTC · ↺ Refresh
MX Hostnames
- mx.mailcorp.com.br
MX Priorities
- mx.mailcorp.com.br: 10
A / AAAA Records
- 77.37.126.197 ↩ srv634802.hstgr.cloud
Mail Server IPs
- 168.0.133.10 ↩ mx-ha.skymail.net.br
SOA Record
Raw SOA
dns1.ctitech.net.br postmaster.ctitech.net.br 2026031801 28800 3600 604800 300
Primary NS (mname)
dns1.ctitech.net.br
Admin Email (rname)
postmaster@ctitech.net.br
Serial
2026031801
Refresh
28800s
Retry
3600s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
dns2.ctitech.net.br
dns1.ctitech.net.br
dns4.ctitech.net.br
dns3.ctitech.net.br
SPF Record
✓ Strict (-all)
v=spf1 include:spf.ctitech.net.br -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; adkim=s; aspf=s
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 include:spf.ctitech.net.br -all
Full email verification for trdsystem.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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