sistemavalladolid.com

Valid Email Server
Domain Lookup › sistemavalladolid.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sistemavalladolid.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 17:19:53 UTC · ↺ Refresh

MX Hostnames

  • aspmx.l.google.com
  • alt1.aspmx.l.google.com
  • alt4.aspmx.l.google.com
  • alt2.aspmx.l.google.com
  • alt3.aspmx.l.google.com

MX Priorities

  • alt2.aspmx.l.google.com: 5
  • alt4.aspmx.l.google.com: 10
  • aspmx.l.google.com: 1
  • alt1.aspmx.l.google.com: 5
  • alt3.aspmx.l.google.com: 10

A / AAAA Records

  • 189.206.69.146

Mail Server IPs

  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
  • 173.194.76.27 ↩ ws-in-f27.1e100.net
  • 2a00:1450:400c:c00::1b ↩ ws-in-x1b.1e100.net
  • 192.178.155.26 ↩ yuiadrs-in-f26.1e100.net
  • 2607:f8b0:4004:c23::1a ↩ yuiadrs-in-f26.1e100.net
  • 192.178.218.27 ↩ yuiadtq-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net

SOA Record

Raw SOA s1.dns-va.com.mx juan.rendon.sistemavalladolid.com 2026030702 7200 540 604800 86400
Primary NS (mname)
s1.dns-va.com.mx
Admin Email (rname)
juan@rendon.sistemavalladolid.com
Serial
2026030702
Refresh
7200s
Retry
540s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

s1.dns-va.com.mx
s2.dns-va.com.mx

SPF Record

✓ Strict (-all)
v=spf1 include:_spf.google.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict 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

4 records
  • google-site-verification=XBUdy8Wb7-L0ksOKbDqwL8ESzzugrNbgHb2w7C76Kqo
  • facebook-domain-verification=og2rm92llclyzwve51l3fawttsm6mq
  • google-site-verification=w_puRYvZR2c9QEPOR_HpLvcVW65PhbQix099RWumwxo
  • SPFv=spf1 include:_spf.google.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 sistemavalladolid.com

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

No credit card required
Get 1,000 Free Credits