colsan.edu.mx

Valid Email Server
Domain Lookup › colsan.edu.mx

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
colsan.edu.mx
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-22 01:26:50 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 200.57.25.228

Mail Server IPs

  • 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
  • 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 173.194.76.27 ↩ ws-in-f27.1e100.net
  • 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
  • 172.253.122.27 ↩ bh-in-f27.1e100.net
  • 2607:f8b0:4004:c17::1a ↩ bl-in-f26.1e100.net

SOA Record

Raw SOA tonatiuh hostmaster 148 900 600 86400 3600
Primary NS (mname)
tonatiuh
Admin Email (rname)
hostmaster
Serial
148
Refresh
900s
Retry
600s
Expire
86400s
Minimum TTL
3600s

Nameservers (NS)

tonatiuh
tonatiuh.colsan.edu.mx

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

4 records
  • 6pt4v8ehs6dcgt9s962ok5urh
  • MS=A729EFA0D912C7ACA255BE9B42F55CED46EB797D
  • google-site-verification=GajywZhkH47ENalnM7fQcjDMleSX7SEhn7ra_Y8L0PY
  • SPFv=spf1 include:_spf.google.com ~all
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