Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
iprev.df.gov.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-31 08:52:47 UTC · ↺ Refresh
MX Hostnames
- smtp054.gdfnet.df.gov.br
- smtp053.gdfnet.df.gov.br
- smtp051.gdfnet.df.gov.br
MX Priorities
- smtp053.gdfnet.df.gov.br: 5
- smtp051.gdfnet.df.gov.br: 15
- smtp054.gdfnet.df.gov.br: 5
A / AAAA Records
- 131.72.220.94 (no PTR)
Mail Server IPs
- 131.72.222.253 ↩ smtp053.gdfnet.df.gov.br
- 131.72.221.51 ↩ smtp051.gdfnet.df.gov.br
- 131.72.222.254 ↩ smtp054.gdfnet.df.gov.br
SOA Record
Raw SOA
dns1.gdfnet.df.gov.br suporte.gdfnet.df.gov.br 2026031801 28800 7200 2400000 86400
Primary NS (mname)
dns1.gdfnet.df.gov.br
Admin Email (rname)
suporte@gdfnet.df.gov.br
Serial
2026031801
Refresh
28800s
Retry
7200s
Expire
2400000s
Minimum TTL
86400s
Nameservers (NS)
dns2.df.gov.br
dns1.gdfnet.df.gov.br
dns3.df.gov.br
SPF Record
✓ Strict (-all)
v=spf1 ip4:131.72.220.0/22 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo 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 ip4:131.72.220.0/22 -all
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