jcortina.com

Valid Email Server
Domain Lookup › jcortina.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
jcortina.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-26 19:43:19 UTC · ↺ Refresh

MX Hostnames

  • smtp.google.com

MX Priorities

  • smtp.google.com: 1

A / AAAA Records

  • 138.197.108.91 (no PTR)

Mail Server IPs

  • 172.253.62.27 ↩ bc-in-f27.1e100.net
  • 142.251.179.27 ↩ pd-in-f27.1e100.net
  • 142.251.179.26 ↩ pd-in-f26.1e100.net
  • 64.233.180.27 ↩ on-in-f27.1e100.net
  • 64.233.180.26 ↩ on-in-f26.1e100.net
  • 2607:f8b0:4004:c07::1b ↩ bc-in-f27.1e100.net
  • 2607:f8b0:4004:c1f::1b ↩ pd-in-f27.1e100.net
  • 2607:f8b0:4004:c21::1b ↩ pe-in-f27.1e100.net
  • 2607:f8b0:4004:c21::1a ↩ pe-in-f26.1e100.net

SOA Record

Raw SOA ns.rackspace.com hostmaster.rackspace.com 1774374692 10800 3600 604800 300
Primary NS (mname)
ns.rackspace.com
Admin Email (rname)
hostmaster@rackspace.com
Serial
1774374692
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns2.rackspace.com
ns.rackspace.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

3 records
  • google-site-verification=iiKqeq4UvaLeduGNX1hdO0y8_iyy5Rq9LXCQnsuxzgk
  • SPFv=spf1 include:_spf.google.com ~all
  • SPFv=spf1 include:emailsrvr.com ~all
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 jcortina.com

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

No credit card required
Get 1,000 Free Credits