cbtu.gov.br

Valid Email Server

Domain Overview

DNS: โœ“ 2mo ago Checker: โœ“ 2mo ago
cbtu.gov.br
Yes
โœ“ Yes
Unknown
No
No
โš  Yes
No
No
Did you mean: [email protected]

Checked via [email protected] ยท 2026-03-29 00:42:37 UTC ยท โ†บ Refresh

MX Hostnames

  • mail-1.cbtu.gov.br
  • pop2.cbtu.gov.br
  • antispam.cbtu.gov.br
  • pop.cbtu.gov.br

MX Priorities

  • antispam.cbtu.gov.br: 25
  • mail-1.cbtu.gov.br: 15
  • pop.cbtu.gov.br: 20
  • pop2.cbtu.gov.br: 10

A / AAAA Records

  • 200.252.98.183 โ†ฉ cbtu.gov.br
  • 186.200.39.177 โ†ฉ cbtu.gov.br

Mail Server IPs

  • 200.252.98.182 โ†ฉ antispam.cbtu.gov.br
  • 186.200.39.170 โ†ฉ pop.cbtu.gov.br
  • 200.252.98.181 โ†ฉ pop2.cbtu.gov.br
  • 186.200.39.169 โ†ฉ pop2.cbtu.gov.br

SOA Record

Raw SOA ns1.cbtu.gov.br suporte.cbtu.gov.br 2026032502 10800 3600 2419200 300
Primary NS (mname)
ns1.cbtu.gov.br
Admin Email (rname)
suporte@cbtu.gov.br
Serial
2026032502
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
300s

Nameservers (NS)

ns1.cbtu.gov.br
ns4.cbtu.gov.br
ns3.cbtu.gov.br
ns2.cbtu.gov.br

SPF Record

โœ“ Strict (-all)
v=spf1 mx include:_spf.google.com -all
๐Ÿ“Š DNS lookups: 2/10
โœ“ Hard fail (-all) โ€” strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; pct=10; rua=mailto:[email protected]; adkim=r; aspf=s
~ Quarantine โ€” good protection (failing mail goes to spam)
๐Ÿ“‹ SPF alignment: Strict ยท DKIM alignment: Relaxed
๐Ÿ“ง Reports โ†’ mailto:[email protected]
โš  Policy applies to 10% of failing messages only

DKIM Selectors

โœ“ 1 found
default._domainkey
โœ“ Public key: 392 chars (valid)
โœ“ DKIM properly configured for selector: default

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

1 record
  • SPFv=spf1 mx include:_spf.google.com -all
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