shelbycountytn.gov

Valid Email Server
Domain Lookup › shelbycountytn.gov

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
shelbycountytn.gov
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-27 22:16:55 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 89.106.200.153 (no PTR)

Mail Server IPs

  • 170.10.152.242 ↩ usb-smtp-delivery-2.mimecast.com
  • 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com

SOA Record

Raw SOA kellen.ns.cloudflare.com dns.cloudflare.com 2400105916 10000 2400 604800 1800
Primary NS (mname)
kellen.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400105916
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

raina.ns.cloudflare.com
kellen.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.shelbycountytn.gov -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected],mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1

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

All TXT Records

7 records
  • SPFv=spf1 include:spf.shelbycountytn.gov -all
  • KkFlgesDu8othl2sJSq4B7UlKZjPVJpM6oU5emWlKZQerE4wLgwZEwK3Q5+eoxhm9zcvXl/3dnZ7SGe7nCSlXA==
  • MS=ms77889889
  • bw=vHYQ5uj6kuikgZ1QacAETJ8Rn7CQMU97AL0A8eMtkxit
  • google-site-verification=uycMs6bg2kF-iIekJzDNqD27G9Dc_PPYunfLZFalOSw
  • logmein-verification-code=477f6370-de35-4e4d-bd5e-26067487e95f
  • nintex.636ac6d7404e266770a13a75
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 · Customize →
See demo & docs
Deep verification
Full email verification for shelbycountytn.gov

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

No credit card required
Get 1,000 Free Credits