s-t.mx

Valid Email Server
Domain Lookup › s-t.mx

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
s-t.mx
Yes
✓ Yes
Zoho
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-25 15:48:48 UTC · ↺ Refresh

MX Hostnames

  • mx.zoho.com
  • mx2.zoho.com

MX Priorities

  • mx.zoho.com: 10
  • mx2.zoho.com: 20

A / AAAA Records

  • 185.158.133.1 (no PTR)

Mail Server IPs

  • 136.143.183.44 ↩ mx3.zoho.com
  • 136.143.191.44 ↩ mx3.zohomail.com

SOA Record

Raw SOA ns-197.awsdns-24.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-197.awsdns-24.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-988.awsdns-59.net
ns-1379.awsdns-44.org
ns-1633.awsdns-12.co.uk
ns-197.awsdns-24.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:servers.mcsv.net include:zoho.com ?all
📊 DNS lookups: 2/10
? Neutral (?all) — no enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 4 found
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1

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

All TXT Records

3 records
  • MS=ms42488678
  • google-site-verification=923lZkxaNhVs6htcxeTvZ3z8ihf9mNniVTE1DJTXrEw
  • SPFv=spf1 include:servers.mcsv.net include:zoho.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 s-t.mx

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

No credit card required
Get 1,000 Free Credits