Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rocketseat.com.br
Yes
✓ Yes
Zoho
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 05:36:48 UTC · ↺ Refresh
MX Hostnames
- mx3.zoho.com
- mx.zoho.com
- mx2.zoho.com
MX Priorities
- mx3.zoho.com: 50
- mx2.zoho.com: 20
- mx.zoho.com: 10
A / AAAA Records
- 76.76.21.21 (no PTR)
Mail Server IPs
- 136.143.191.44 ↩ mx3.zohomail.com
- 136.143.183.44 ↩ mx3.zoho.com
SOA Record
Raw SOA
ns-cloud-e1.googledomains.com cloud-dns-hostmaster.google.com 2 21600 3600 259200 300
Primary NS (mname)
ns-cloud-e1.googledomains.com
Admin Email (rname)
cloud-dns-hostmaster@google.com
Serial
2
Refresh
21600s
Retry
3600s
Expire
259200s
Minimum TTL
300s
Nameservers (NS)
ns-cloud-e4.googledomains.com
ns-cloud-e2.googledomains.com
ns-cloud-e3.googledomains.com
ns-cloud-e1.googledomains.com
SPF Record
✓ Strict (-all)
v=spf1 include:zoho.com include:21922407.spf04.hubspotemail.net include:amazonses.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
zoho._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: zoho
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- google-site-verification=_FRRWzQOZkTv6EjfEkxQpm4A2LNTb0RKcDOd923hdnk
- google-site-verification=k3T4Ra1UnXHO43HmE4D5_diKi-ErNkYX6qu1qfKYJSM
- SPFv=spf1 include:zoho.com include:21922407.spf04.hubspotemail.net include:amazonses.com -all
Full email verification for rocketseat.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits