jbchicago.com

Valid Email Server
Domain Lookup › jbchicago.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
jbchicago.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-29 03:47:56 UTC · ↺ Refresh

MX Hostnames

  • us-smtp-inbound-2.mimecast.com
  • us-smtp-inbound-1.mimecast.com

MX Priorities

  • us-smtp-inbound-2.mimecast.com: 10
  • us-smtp-inbound-1.mimecast.com: 10

A / AAAA Records

  • 208.91.197.27 (no PTR)

Mail Server IPs

  • 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com

SOA Record

Raw SOA ns41.worldnic.com namehost.worldnic.com 124030604 10800 3600 604800 3600
Primary NS (mname)
ns41.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
124030604
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns42.worldnic.com
ns41.worldnic.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_netblocks.mimecast.com include:o365.crossware.co.nz ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; adkim=r; aspf=r; pct=100; ri=86400; sp=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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

7 records
  • google-site-verification=AHC7Ufz2DyZCQnwXvKYLhOXs5RKvT2cGHxbM5W4pEpI
  • 0ed1fe018a41b1c86a90f44b2dac7f5bfd5acfcaec
  • v=verifydomain MS=ms76002014
  • SPFv=spf1 include:_netblocks.mimecast.com include:o365.crossware.co.nz ~all
  • MS=ms21796176
  • 1nj1aeqpggqt5bjpca7egogdf7
  • google-site-verification=8ntxeJFIoL8cLUnMhiS3-ie_SoWIiXZK69i0EMIIqiY
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for jbchicago.com

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits