one.biz

Valid Email Server
Domain Lookup › one.biz

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
one.biz
Yes
✓ Yes
Zoho
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-19 20:54:04 UTC · ↺ Refresh

MX Hostnames

  • mx3.zoho.com
  • mx2.zoho.com
  • mx.zoho.com

MX Priorities

  • mx3.zoho.com: 30
  • mx.zoho.com: 10
  • mx2.zoho.com: 10

A / AAAA Records

  • 74.208.236.122 ↩ 74-208-236-122.elastic-ssl.ui-r.com
  • 2607:f1c0:100f:f000::24f ↩ 2607-f1c0-100f-f000-0000-0000-0000-024f.elastic-ssl.ui-r.com

Mail Server IPs

  • 136.143.191.44 ↩ mx.zohomail.com
  • 136.143.183.44 ↩ mx.zohomail.com

SOA Record

Raw SOA ns1045.ui-dns.biz hostmaster.1und1.com 2015101809 28800 7200 604800 600
Primary NS (mname)
ns1045.ui-dns.biz
Admin Email (rname)
hostmaster@1und1.com
Serial
2015101809
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1045.ui-dns.com
ns1045.ui-dns.biz
ns1045.ui-dns.de
ns1045.ui-dns.org

SPF Record

✓ Soft Fail (~all)
v=spf1 include:zoho.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

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

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

All TXT Records

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