Email domain
sina.cn email servers, SPF and DMARC
Mail for @sina.cn goes to freemx1.sinamail.sina.com.cn (MX priority 10) and 2 backup hosts, as DNS showed on 5 November 2026. The host sits under sina.com.cn. The domain publishes an SPF record ending in -all and a DMARC policy of p=none, which decide whether mail claiming to be from @sina.cn is trusted.
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sina.cn mail DNS on 5 November 2026
| Priority | MX host | Platform |
|---|---|---|
| 10 | freemx1.sinamail.sina.com.cn | Not identified |
| 10 | freemx2.sinamail.sina.com.cn | Not identified |
| 10 | freemx3.sinamail.sina.com.cn | Not identified |
| SPF | v=spf1 include:spf.sinamail.sina.com.cn -all |
|---|---|
| DMARC | v=DMARC1; p=none; |
| 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.
sina.cn MX records
sina.cn publishes 3 MX hosts, all at priority 10, so senders spread mail across them.
sina.cn SPF record
The record on 5 November 2026 was v=spf1 include:spf.sinamail.sina.com.cn -all.
In plain terms, it delegates to spf.sinamail.sina.com.cn. The top level uses 1 DNS-querying term; 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.
sina.cn DMARC policy
The record is v=DMARC1; p=none;.
p=none only asks for reports; failing mail is delivered as normal.
Domains on the same mail servers as sina.cn
sina.cn shares freemx1.sinamail.sina.com.cn, freemx2.sinamail.sina.com.cn and freemx3.sinamail.sina.com.cn with sina.com. When we tested those servers for sina.com on 13 October 2026, the result was: Verifiable. The server rejects unknown recipients during the SMTP conversation.
Can you verify @sina.cn addresses?
Our checker treats @sina.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 tested @sina.cn itself, but its mail goes to the same servers as sina.com, so expect @sina.cn results to follow the pattern described there. 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 sina.cn?
- On 5 November 2026:
freemx1.sinamail.sina.com.cn(priority 10),freemx2.sinamail.sina.com.cn(priority 10),freemx3.sinamail.sina.com.cn(priority 10). - Does sina.cn have SPF and DMARC?
- On 5 November 2026
sina.cnpublished an SPF record ending in-alland a DMARC policy ofp=none. - Is sina.cn a disposable email domain?
- No.
sina.cnis not on the disposable domain list our checker uses, so @sina.cn addresses are checked like any other mailbox. See the disposable domain checker for the list.
Free checks for @sina.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.
Got a list with @sina.cn 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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