Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jbtec.com.br
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 03:27:05 UTC · ↺ Refresh
MX Hostnames
- alt3.aspmx.l.google.com
- alt1.aspmx.l.google.com
- alt2.aspmx.l.google.com
- aspmx.l.google.com
- alt4.aspmx.l.google.com
MX Priorities
- aspmx.l.google.com: 1
- 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
- 51.79.99.3
Mail Server IPs
- 172.253.62.26 ↩ bc-in-f26.1e100.net
- 2607:f8b0:4004:c1d::1b ↩ ww-in-f27.1e100.net
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
SOA Record
Raw SOA
ns-298.awsdns-37.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-298.awsdns-37.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-728.awsdns-27.net
ns-1506.awsdns-60.org
ns-1979.awsdns-55.co.uk
ns-298.awsdns-37.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- site24x7-domain-verification=4e60b63eb2c0d120d489b798f28d658f
- SPFv=spf1 include:_spf.google.com ~all
- SPFv=spf1 include:_spf.rdstation.com.br include:sendgrid.net ~all
- MS=3286E559A2536B79164E51D41D296FCD809E4F38
- google-site-verification=GWmdXy4BLClRhA-DcF7eIryLeic_E8SJXoQ877Lt3Rg
- google-site-verification=QW7Ewyyang3RZs30ktkPLRsx2GuqCRAFYGTlTXovPrE
- google-site-verification=aWQv_WkSSMm_OWx2z4iG9k9UvD0_UKi5hQWBw5vJRGI
Full email verification for jbtec.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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