Is nju.edu.cn a valid email domain?
nju.edu.cn has working mail routing: 2 MX records pointing, led by mxbiz1.qq.com.
It is not a free provider and is not on our disposable list, so addresses here usually belong to a company, school or other organisation.
SPF is published and ends with ~all. DMARC is set to reject.
Check an email address at nju.edu.cn
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MX records
| Priority | Mail server | Resolves to |
|---|---|---|
| 5 | mxbiz1.qq.com | 103.86.78.2, 103.86.78.3 |
| 10 | mxbiz2.qq.com | 43.154.252.16, 43.154.252.202 |
SPF
Record published
v=spf1 include:spf.mail.qq.com ~all
DMARC
Policy: reject
v=DMARC1;p=reject;rua=mailto:mailauth-reports@qq.com
Disposable?
No, not on our disposable list.
Free provider?
No, not a known free provider.
What this means for your email list
What this means for addresses at this domain
The domain accepts mail, but whether a given person's mailbox exists depends on that organisation. Company domains often have staff who left, role mailboxes like info@ and sales@, and sometimes catch-all rules that accept everything. Verify the individual address before you send.
Sender authentication
nju.edu.cn has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as nju.edu.cn must have SPF and DKIM set up correctly.
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Sign up to get a report summary →Frequently asked questions
- Is nju.edu.cn a valid email domain?
- Yes. nju.edu.cn publishes 2 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is nju.edu.cn a disposable email domain?
- No. nju.edu.cn is not on our disposable list. The list is updated regularly, and new throwaway domains appear all the time.
- What are the MX records for nju.edu.cn?
- mxbiz1.qq.com (priority 5); mxbiz2.qq.com (priority 10).
- Does nju.edu.cn have SPF and DMARC?
- SPF: yes, ending ~all. DMARC: yes, policy reject.