Email domain
189.cn email servers, SPF and DMARC
Mail for @189.cn goes to mta-189.21cn.com (MX priority 10) and 2 backup hosts, as DNS showed on 5 November 2026. The host sits under 21cn.com. The domain publishes an SPF record ending in -all and no DMARC record, which decide whether mail claiming to be from @189.cn is trusted.
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189.cn mail DNS on 5 November 2026
| Priority | MX host | Platform |
|---|---|---|
| 10 | mta-189.21cn.com | Not identified |
| 20 | mx2-189.21cn.com | Not identified |
| 30 | mx3-189.21cn.com | Not identified |
| SPF | v=spf1 include:mail-spf.21cn.com include:hwmail-spf.21cn.com -all |
|---|---|
| DMARC | None published |
| 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.
189.cn MX records
189.cn publishes 3 MX hosts; senders try the lowest priority number first (mta-189.21cn.com, 10) and fall back to the others in order.
1 other domain we checked on the same day also route mail to hosts under 21cn.com, with different records from 189.cn: 21cn.com.
189.cn SPF record
The record on 5 November 2026 was v=spf1 include:mail-spf.21cn.com include:hwmail-spf.21cn.com -all.
In plain terms, it delegates to mail-spf.21cn.com and hwmail-spf.21cn.com. The top level uses 2 DNS-querying terms; SPF allows 10 in total including nested includes (RFC 7208 §4.6.4).
It ends in a hard fail (-all): receivers may reject mail from any server the record does not list.
189.cn DMARC policy
_dmarc.189.cn returned no DMARC record on 5 November 2026. Receivers therefore get no instruction about mail that fails SPF and DKIM, which makes @189.cn easier to spoof (RFC 7489).
Can you verify @189.cn addresses?
Our checker treats @189.cn 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 mta-189.21cn.com answers for @189.cn, 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 189.cn?
- On 5 November 2026:
mta-189.21cn.com(priority 10),mx2-189.21cn.com(priority 20),mx3-189.21cn.com(priority 30). - Does 189.cn have SPF and DMARC?
- On 5 November 2026
189.cnpublished an SPF record ending in-alland no DMARC record. - Is 189.cn a disposable email domain?
- No.
189.cnis not on the disposable domain list our checker uses, so @189.cn addresses are checked like any other mailbox. See the disposable domain checker for the list.
Free checks for @189.cn 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.
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