Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
checkbits.com.br
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 04:57:00 UTC · ↺ Refresh
MX Hostnames
- alt2.aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt1.aspmx.l.google.com
- aspmx.l.google.com
- alt3.aspmx.l.google.com
- 10mx.sendgrid.net
MX Priorities
- aspmx.l.google.com: 1
- 10mx.sendgrid.net: 10
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
A / AAAA Records
- 172.67.187.135 (no PTR)
- 104.21.7.64 (no PTR)
- 2606:4700:3036::ac43:bb87
- 2606:4700:3031::6815:740
Mail Server IPs
- 172.253.122.27 ↩ bh-in-f27.1e100.net
- 2607:f8b0:4004:c19::1a ↩ bk-in-f26.1e100.net
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
SOA Record
Raw SOA
george.ns.cloudflare.com dns.cloudflare.com 2400549380 10000 2400 604800 1800
Primary NS (mname)
george.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400549380
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
surina.ns.cloudflare.com
george.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:_spf.rdstation.com.br include:sendgrid.net include:mailgun.org ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- SPFv=spf1 include:_spf.google.com include:_spf.rdstation.com.br include:sendgrid.net include:mailgun.org ~all
- facebook-domain-verification=ttyn4yfni8j86wocnpg10qnz3csdfj
- google-site-verification=91mA_enW_51mXTEJcytv8FXCdHIQWRS35SBZo60re94
- google-site-verification=O53BxZNGQ2Zkxv7nUAprFJ_JVbSzhowBsh96eddrC_s
- google-site-verification=vWzAymm91kMfTwBkRdAR-alNrZMZVKhErehrCa60Mac
Full email verification for checkbits.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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