institutosalamanca.com

Valid Email Server
Domain Lookup › institutosalamanca.com

Domain Overview

DNS: ✓ 8h ago Checker: ✓ 8h ago
institutosalamanca.com
Yes
✓ Yes
Zoho
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-07-01 07:45:12 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

  • mx3.zoho.com
  • mx.zoho.com
  • mx2.zoho.com

MX Priorities

  • mx.zoho.com: 10
  • mx2.zoho.com: 20
  • mx3.zoho.com: 50

A / AAAA Records

  • 104.21.66.7 (no PTR)
  • 172.67.154.119 (no PTR)
  • 2606:4700:3034::ac43:9a77 (no PTR)
  • 2606:4700:3035::6815:4207 (no PTR)

Mail Server IPs

  • 204.141.43.44 ↩ mx3.zoho.com
  • 204.141.33.44 ↩ mx.zoho.com

SOA Record

Raw SOA iris.ns.cloudflare.com dns.cloudflare.com 2406168398 10000 2400 604800 1800
Primary NS (mname)
iris.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2406168398
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

iris.ns.cloudflare.com
max.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 mx include:zoho.com include:spf.acumbamail.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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

4 records
  • Acumbamail-domain-verification:d56b256a-7a78-11ef-9142-005056bd5094
  • SPFv=spf1 mx include:zoho.com include:spf.acumbamail.com ~all
  • yahoo-verification-key=sZNhARch/xpvwALnqbaJi2sgLCmCWwOOxxHvsBAUjnM=
  • zoho-verification=zb92413618.zmverify.zoho.com
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 institutosalamanca.com

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

No credit card required
Get 1,000 Free Credits