Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
castecnologia.com.br
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 04:52:29 UTC · ↺ Refresh
MX Hostnames
- smtp.google.com
MX Priorities
- smtp.google.com: 1
A / AAAA Records
- 189.115.177.56 ↩ corporativo.gvt.net.br
- 201.59.21.39
Mail Server IPs
- 172.253.122.27 ↩ bh-in-f27.1e100.net
- 172.253.122.26 ↩ bh-in-f26.1e100.net
- 172.253.63.26 ↩ bi-in-f26.1e100.net
- 172.253.115.27 ↩ bg-in-f27.1e100.net
- 172.253.115.26 ↩ bg-in-f26.1e100.net
- 2607:f8b0:4004:c06::1a ↩ bg-in-f26.1e100.net
- 2607:f8b0:4004:c09::1b ↩ bh-in-f27.1e100.net
- 2607:f8b0:4004:c09::1a ↩ bh-in-f26.1e100.net
- 2607:f8b0:4004:c06::1b ↩ bg-in-f27.1e100.net
SOA Record
Raw SOA
ns1.castecnologia.com.br psg\.ns.castecnologia.com.br 2026012301 10800 3600 1209600 38400
Primary NS (mname)
ns1.castecnologia.com.br
Admin Email (rname)
psg\@ns.castecnologia.com.br
Serial
2026012301
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
38400s
Nameservers (NS)
ns2.castecnologia.com.br
ns3.castecnologia.com.br
ns1.castecnologia.com.br
SPF Record
✓ Strict (-all)
v=spf1 a mx include:_spf.google.com ip4:189.115.177.58/32 ip4:201.59.21.38/32 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=quarantine; pct=100; ruf=mailto:[email protected]; rua=mailto:[email protected]; adkim=r; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 a mx include:_spf.google.com ip4:189.115.177.58/32 ip4:201.59.21.38/32 -all
- google-site-verification=2jH9F78fQvS46OKOPvIqwXQu02d9MIMsH0Uh2sxDqk8
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