MX records for yahoo.co.jp
Live MX lookup for yahoo.co.jp: 4 mail hosts, run by an unrecognised provider.
try:
- mail hosts
- mx5.mail.yahoo.co.jp, mx3.mail.yahoo.co.jp, mx2.mail.yahoo.co.jp, mx1.mail.yahoo.co.jp
- provider
- other
- spf record
- v=spf1 include:spf.yahoo.co.jp ~all
- dmarc policy
- quarantine
- dmarc record
- v=DMARC1; p=quarantine; rua=mailto:[email protected]
- disposable domain
- no
- free consumer provider
- yes
Mail servers for yahoo.co.jp
DNS lists 4 mail hosts for yahoo.co.jp, starting with mx5.mail.yahoo.co.jp. Lower priority values are tried first; the rest exist for failover.
Who runs the mail
The hosts match the pattern of an unrecognised provider. The mail hosts do not match a known provider pattern, so the domain is probably self-hosted or on a smaller provider. Catch-all behaviour varies from server to server, which is exactly why a mailbox-level probe, not the MX record, decides whether an address exists.
What this means for verification
For yahoo.co.jp, verification runs the whole pipeline: syntax, live MX, the open lists, and then the SMTP handshake with the mail host, with no message ever transmitted. Each verdict carries a machine-readable reason.
More checks for yahoo.co.jp
checked 2026-09-03 · sources: live-dns 2026-09-03 · disposable-domains 2026-09-02 · free-provider-domains 2026-09-02 · mx-provider-patterns 2026-09-03
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