Is ybb.ne.jp a valid email domain?
ybb.ne.jp has working mail routing: 1 MX record pointing, led by ybbmx1.mail.yahoo.co.jp.
It is a free, public mailbox provider, and it is not on our disposable list.
SPF is published. DMARC is set to none.
Check an email address at ybb.ne.jp
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MX records
| Priority | Mail server | Resolves to |
|---|---|---|
| 10 | ybbmx1.mail.yahoo.co.jp | 203.216.254.83, 203.216.254.82 |
SPF
Record published
v=spf1 redirect=yahoo.co.jp
DMARC
Policy: none
v=DMARC1; p=none; rua=mailto:ymail_dmarc_reports@ybb.ne.jp
Disposable?
No, not on our disposable list.
Free provider?
Yes, a free public mailbox provider.
What this means for your email list
Is a free-provider address a problem?
No: plenty of genuine customers use ybb.ne.jp. For business-to-business sales a free address can mean a personal contact instead of a work one, so segment these separately if that matters to you. The address itself still needs checking for typos and dead mailboxes.
Sender authentication
ybb.ne.jp has DMARC in monitoring mode (p=none). It collects reports but does not yet block spoofed mail, so the domain is easier to impersonate.
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Sign up to get a report summary →Frequently asked questions
- Is ybb.ne.jp a valid email domain?
- Yes. ybb.ne.jp publishes 1 MX record and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is ybb.ne.jp a disposable email domain?
- No. ybb.ne.jp is not on our disposable list, but it is a free public provider. The list is updated regularly, and new throwaway domains appear all the time.
- What are the MX records for ybb.ne.jp?
- ybbmx1.mail.yahoo.co.jp (priority 10).
- Does ybb.ne.jp have SPF and DMARC?
- SPF: yes. DMARC: yes, policy none.