Domain Overview
DNS: ✓ 1mo ago
Checker: ✓ 1mo ago
ufrj.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-06 13:57:17 UTC · ↺ Refresh
MX Hostnames
- smtp.ufrj.br
MX Priorities
- smtp.ufrj.br: 9
A / AAAA Records
- 200.156.137.16 (no PTR)
Mail Server IPs
- 146.164.170.153 ↩ smtp.ufrj.br
SOA Record
Raw SOA
ns.ufrj.br helpdns.tic.ufrj.br 2026032001 3600 600 604800 300
Primary NS (mname)
ns.ufrj.br
Admin Email (rname)
helpdns@tic.ufrj.br
Serial
2026032001
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns.ufrj.br
nsx.ufrj.br
SPF Record
✓ Strict (-all)
v=spf1 ip4:146.164.170.13/32 ip4:146.164.170.153/32 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 392 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 ip4:146.164.170.13/32 ip4:146.164.170.153/32 -all
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