domain report
Should you accept email addresses at 163.com?
163.com is on the isBusinessEmail blocklist.
Personal email on a shared provider (think Gmail, Outlook, Yahoo).
- category
- personal
- recommendation
- block
- confidence
- 97%
- Google Workspace: not detected
- Microsoft 365: not detected
Mail setup
- Receives mail
- Yes
- Mail provider
- —
- SPF
- v=spf1 include:spf.mail.163.com -all
- DMARC policy
- none
| Priority | MX host |
|---|---|
| 10 | 163mx02.mxmail.netease.com |
| 10 | 163mx01.mxmail.netease.com |
| 10 | 163mx03.mxmail.netease.com |
| 50 | 163mx00.mxmail.netease.com |
Workspace
- Google WorkspaceNot detected
- Microsoft 365Not detected
Detected per company domain from public DNS and Microsoft's documented tenant discovery — never per person.
Why this verdict
Confidence 97% · recommendation block under the default b2b policy.
What this means
The isBusinessEmail team blocks domains that are used for abuse, such as fake sign-ups and spam. A check returns is_blocked: true with the reason blocked_domain, and the recommendation is block under every policy.
The category still describes the domain itself (here: personal). 163.com receives mail through 163mx02.mxmail.netease.com, 163mx01.mxmail.netease.com, 163mx03.mxmail.netease.com and more.
Questions about 163.com
Why is 163.com blocked?
It is on the isBusinessEmail blocklist, which the team maintains for domains used for abuse. If you think it is there by mistake, report it through the contact page.
What does a check return for 163.com?
is_blocked: true, reason blocked_domain, and the recommendation "block" under b2b, strict and lenient.