Email domain
yahoo.ne.jp email servers, SPF and DMARC
Mail for @yahoo.ne.jp goes to ymobilemx1.mail.yahoo.co.jp (MX priority 10), as DNS showed on 5 November 2026. The host sits under yahoo.co.jp. The domain publishes an SPF record v=spf1 redirect=yahoo.co.jp and a DMARC policy of p=quarantine, which decide whether mail claiming to be from @yahoo.ne.jp is trusted.
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yahoo.ne.jp mail DNS on 5 November 2026
| Priority | MX host | Platform |
|---|---|---|
| 10 | ymobilemx1.mail.yahoo.co.jp | Not identified |
| SPF | v=spf1 redirect=yahoo.co.jp |
|---|---|
| DMARC | v=DMARC1; p=quarantine; rf=afrf; rua=mailto:[email protected]; ruf=mailto:[email protected] |
| MTA-STS | None published |
| TLS reporting | None published |
Read on 5 November 2026 with dig against 1.1.1.1 (8.8.8.8 as fallback); nothing sent to the mail servers. Check the records today with the email provider lookup.
yahoo.ne.jp MX records
yahoo.ne.jp publishes a single MX host, ymobilemx1.mail.yahoo.co.jp. With no backup host, a sender that can't reach it queues the message and retries until the server answers or the queue gives up.
yahoo.ne.jp SPF record
The record on 5 November 2026 was v=spf1 redirect=yahoo.co.jp.
In plain terms, it delegates to yahoo.co.jp. The top level uses 1 DNS-querying term; SPF allows 10 in total including nested includes (RFC 7208 §4.6.4).
yahoo.ne.jp DMARC policy
The record is v=DMARC1; p=quarantine; rf=afrf; rua=mailto:[email protected]; ruf=mailto:[email protected].
p=quarantine asks receivers to send failing mail to spam.
Aggregate reports go to yahoo.ne.jp, so the domain's owner sees who sends mail as @yahoo.ne.jp.
What that means for you: if a contact gives an @yahoo.ne.jp address and you send to them, nothing changes. But never put an @yahoo.ne.jp address in the From line of mail sent through your own tool or ESP. It can't pass DMARC for yahoo.ne.jp, and this policy tells receivers to junk it.
Can you verify @yahoo.ne.jp addresses?
Our checker treats @yahoo.ne.jp like any domain: syntax, MX, disposable and role checks first, then a made-up address to rule out a catch-all, then your address at RCPT TO, disconnecting without sending. We have not published a test of how ymobilemx1.mail.yahoo.co.jp answers for @yahoo.ne.jp, so we make no claim here about whether single mailboxes can be confirmed; each result carries its own reason.
Cleaning a list with these addresses
DNS tells you where mail goes, not whether one person's mailbox still exists. For a list, run the whole file through a verifier before you send: invalid rows come out, risky rows (catch-all, unknown, refused) go in their own segment, and valid rows are safe to mail.
Common questions
- What are the MX records for yahoo.ne.jp?
- On 5 November 2026:
ymobilemx1.mail.yahoo.co.jp(priority 10). - Does yahoo.ne.jp have SPF and DMARC?
- On 5 November 2026
yahoo.ne.jppublished an SPF recordv=spf1 redirect=yahoo.co.jpand a DMARC policy ofp=quarantine. - Is yahoo.ne.jp a disposable email domain?
- No.
yahoo.ne.jpis not on the disposable domain list our checker uses, so @yahoo.ne.jp addresses are checked like any other mailbox. See the disposable domain checker for the list.
Free checks for @yahoo.ne.jp lists
- Bulk email checker for a pasted list or CSV
- Verify a whole file with a reason for every row
- SPF lookup counter
- MTA-STS checker
- Disposable email checker
Another domain? See every email domain we have mapped and what our checker does at each mailbox provider.
Got a list with @yahoo.ne.jp addresses?
Sign in with Google and the first 100 addresses are checked free: valid, risky and invalid, with the reason for each row and a file to download. No card. After that, plans start at $9/mo for 2,500 emails a month.
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