csma.edu.co

Valid Email Server
Domain Lookup › csma.edu.co
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
csma.edu.co
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-07-01 16:06:08 UTC · ↺ Refresh

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MX Hostnames

  • smtp.google.com

MX Priorities

  • smtp.google.com: 0

A / AAAA Records

  • 3.8.106.93 ↩ ec2-3-8-106-93.eu-west-2.compute.amazonaws.com
  • 18.134.78.153
  • 16.61.154.102

Mail Server IPs

  • 64.233.180.26 ↩ pe-in-f26.1e100.net
  • 192.178.218.26 ↩ yuiadtq-in-f26.1e100.net
  • 173.194.45.26 ↩ yuiadum-in-f26.1e100.net
  • 142.251.163.27 ↩ wv-in-f27.1e100.net
  • 64.233.180.27 ↩ on-in-f27.1e100.net
  • 2607:f8b0:4004:c25::1a ↩ yuiadtq-in-f26.1e100.net
  • 2607:f8b0:4004:c29::1a ↩ yuiadum-in-f26.1e100.net
  • 2607:f8b0:4004:c21::1b ↩ pe-in-f27.1e100.net
  • 2607:f8b0:4004:c21::1a ↩ pe-in-f26.1e100.net

SOA Record

Raw SOA ns-1272.awsdns-31.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1272.awsdns-31.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1272.awsdns-31.org
ns-142.awsdns-17.com
ns-1577.awsdns-05.co.uk
ns-718.awsdns-25.net

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

✓ 1 found
google._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google

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

All TXT Records

6 records
  • d365mktkey=InJpb7nu6TTmZ2ajwoiQUNo0B7WLwrrkLDhsy7AuRikx
  • google-site-verification=oNEjdDcfUMoh2PLy0zeQzbtbU7EK7y7Howetw4FrBEM
  • sophos-domain-verification=401a339665474924e8c5180d5bde0e509f2cbe50
  • SPFv=spf1 include:_spf.google.com -all
  • work-accounts-domain-verification=qKy6CZ7ezcx8Ber94YmDBPJoKpUbvH
  • MS=D390BAE4515F6784DC47CA399DAF34CB37CA56DE
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