jbrain-jp.com

Valid Email Server
Domain Lookup › jbrain-jp.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
jbrain-jp.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 06:58:15 UTC · ↺ Refresh

MX Hostnames

  • SMTP.GOOGLE.com

MX Priorities

  • smtp.google.com: 1

A / AAAA Records

  • 157.7.107.41 ↩ 157-7-107-41.virt.lolipop.jp

Mail Server IPs

  • 192.178.218.27 ↩ yuiadtq-in-f27.1e100.net
  • 142.251.179.26 ↩ pd-in-f26.1e100.net
  • 142.251.179.27 ↩ pd-in-f27.1e100.net
  • 64.233.180.26 ↩ on-in-f26.1e100.net
  • 64.233.180.27 ↩ pe-in-f27.1e100.net
  • 2607:f8b0:4004:c1f::1b ↩ pd-in-f27.1e100.net
  • 2607:f8b0:4004:c1f::1a ↩ pd-in-f26.1e100.net
  • 2607:f8b0:4004:c21::1a ↩ pe-in-f26.1e100.net
  • 2607:f8b0:4004:c25::1a ↩ yuiadtq-in-f26.1e100.net

SOA Record

Raw SOA jbrain-jp.com postmaster.jbrain-jp.com 1771722727 3600 1800 604800 3600
Primary NS (mname)
jbrain-jp.com
Admin Email (rname)
postmaster@jbrain-jp.com
Serial
1771722727
Refresh
3600s
Retry
1800s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

dns01.muumuu-domain.com
dns02.muumuu-domain.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.google.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 include:_spf.google.com ~all
  • google-site-verification=mXf8lKV2gc-v8UKeXGZNIwCOKrHuHNz7bjkfMaxIZVA
Full email verification for jbrain-jp.com

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits