cobusiness.mx

Valid Email Server
Domain Lookup › cobusiness.mx

Domain Overview

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

Checked via [email protected] · 2026-03-29 11:19:22 UTC · ↺ Refresh

MX Hostnames

  • aspmx.l.google.com

MX Priorities

  • aspmx.l.google.com: 1

A / AAAA Records

  • 74.208.236.172 ↩ 74-208-236-172.elastic-ssl.ui-r.com
  • 2607:f1c0:100f:f000::257 ↩ 2607-f1c0-100f-f000-0000-0000-0000-0257.elastic-ssl.ui-r.com

Mail Server IPs

  • 172.253.63.26 ↩ bi-in-f26.1e100.net
  • 2607:f8b0:4004:c0b::1a ↩ bj-in-f26.1e100.net

SOA Record

Raw SOA ns1059.ui-dns.com hostmaster.1und1.com 2017060126 28800 7200 604800 600
Primary NS (mname)
ns1059.ui-dns.com
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060126
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1026.ui-dns.biz
ns1022.ui-dns.org
ns1077.ui-dns.de
ns1059.ui-dns.com

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

1 record
  • SPFv=spf1 include:_spf.google.com ~all
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