cus21.edu.mx

Valid Email Server
Domain Lookup › cus21.edu.mx

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
cus21.edu.mx
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-24 22:29:41 UTC · ↺ Refresh

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MX Hostnames

  • ALT1.ASPMX.L.GOOGLE.COM
  • ALT3.ASPMX.L.GOOGLE.COM
  • ALT4.ASPMX.L.GOOGLE.COM
  • 7D26OJYN7TJUEO6FWTN7ES33LT2MAUPUJAQWF4VMGNMBH2RSEKSA.MX-VERIFICATION.GOOGLE.COM
  • ALT2.ASPMX.L.GOOGLE.COM
  • ASPMX.L.GOOGLE.COM

MX Priorities

  • 7d26ojyn7tjueo6fwtn7es33lt2maupujaqwf4vmgnmbh2rseksa.mx-verification.google.com: 15
  • alt3.aspmx.l.google.com: 10
  • alt4.aspmx.l.google.com: 10
  • alt1.aspmx.l.google.com: 5
  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1

A / AAAA Records

  • 170.10.162.192 ↩ mail.akkyhosting26.mx

Mail Server IPs

  • 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
  • 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
  • 173.194.76.26 ↩ ws-in-f26.1e100.net
  • 2a00:1450:400c:c00::1b ↩ ws-in-f27.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net

SOA Record

Raw SOA dns1.akkyhosting26.mx cops.nic.mx 2026032301 3600 1800 1209600 86400
Primary NS (mname)
dns1.akkyhosting26.mx
Admin Email (rname)
cops@nic.mx
Serial
2026032301
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

dns3.akkyhosting26.mx
dns2.akkyhosting26.mx
dns1.akkyhosting26.mx
dns4.akkyhosting26.mx

SPF Record

✓ Soft Fail (~all)
v=spf1 +a +mx +ip4:170.10.164.36 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default

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

All TXT Records

2 records
  • 7d26ojyn7tjueo6fwtn7es33lt2maupujaqwf4vmgnmbh2rseksa.mx-verification.google.com.
  • SPFv=spf1 +a +mx +ip4:170.10.164.36 ~all
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