Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
certoweb.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 03:53:47 UTC · ↺ Refresh
MX Hostnames
- mx-br.spfbl.net
- mx-us.spfbl.net
MX Priorities
- mx-us.spfbl.net: 10
- mx-br.spfbl.net: 5
A / AAAA Records
- 186.226.57.49 ↩ certobr1.certoweb.com.br
Mail Server IPs
- 35.162.4.77 ↩ mx-us.spfbl.net
- 2600:1f14:dfd:4401::8 ↩ mx-us.spfbl.net
- 52.67.41.212 ↩ mx-br.spfbl.net
- 2600:1f1e:4b3:bd00::8 ↩ mx-br.spfbl.net
SOA Record
Raw SOA
ns1.certobr1.virtuaserver.com.br servidores.certoweb.com.br 2026032701 3600 1800 1209600 86400
Primary NS (mname)
ns1.certobr1.virtuaserver.com.br
Admin Email (rname)
servidores@certoweb.com.br
Serial
2026032701
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns2.certobr1.virtuaserver.com.br
ns1.certobr1.virtuaserver.com.br
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:186.226.57.49 +a +mx +ip4:186.226.60.174 include:transports1.transport.sh15.net ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 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
1 record- SPFv=spf1 ip4:186.226.57.49 +a +mx +ip4:186.226.60.174 include:transports1.transport.sh15.net ~all
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