Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
althoff.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 05:27:34 UTC · ↺ Refresh
MX Hostnames
- mail.althoff.com.br
MX Priorities
- mail.althoff.com.br: 0
A / AAAA Records
- 201.76.12.195 ↩ srv1.althoff.com.br
Mail Server IPs
- 201.76.12.195 ↩ srv1.althoff.com.br
SOA Record
Raw SOA
ns3.contato.net sysadmin.contato.net 2026033001 3600 1800 1209600 86400
Primary NS (mname)
ns3.contato.net
Admin Email (rname)
sysadmin@contato.net
Serial
2026033001
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns4.contato.net
ns3.contato.net
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +ip4:201.76.0.20 +ip4:201.76.0.25 +ip4:201.76.0.22 +ip4:170.84.201.26/32 +ip4:201.76.12.192/29 +a:vps01.ostec.com.br -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 2 found
default._domainkey
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 +a +mx +ip4:201.76.0.20 +ip4:201.76.0.25 +ip4:201.76.0.22 +ip4:170.84.201.26/32 +ip4:201.76.12.192/29 +a:vps01.ostec.com.br -all
- MS=ms85032775
- k3x1n5ll6cnrzftlz689qhtzn3h5w5y2
Full email verification for althoff.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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