Each listing on the Pre-warmed page has a shield in its Blocklist column. Click it to run a live check against 9 domain blocklists: Spamhaus DBL, SURBL Multi, Invaluement URI, Nordspam DBL, three SEM lists and two SORBS lists. Green means clean on every list, red means listed on at least one, grey means it hasn't been checked yet. Unsold inventory is also rechecked daily, and a domain found on a blocklist is taken off the marketplace.
What the shield means
Each row on the Pre-warmed page shows a shield in the Blocklist column:
- Green shield. Clean on all 9 lists as of the last check. Hover it to see when that was.
- Red shield. Listed on at least one list. Hover it to see which.
- Grey shield. Not checked yet. Click it to run the check.
Timing matters. A domain that was clean yesterday can be listed today, and the reverse. Click the shield before you buy if you want a result from the last few minutes.
Running a check
- On the Pre-warmed page, click the shield (labelled Check) on any row.
- A window opens and checks all 9 lists at once. Each list shows OK, LISTED, Rate Limited or Error.
- Click Re-check to run it again.
Checks only look up the domain name on each list. They don't send mail and don't change anything about the domain.
The lists
| List | What it covers |
|---|---|
| Spamhaus DBL | Domains seen in spam. The most widely used domain list. |
| SURBL Multi | Domains found in the body of spam messages. |
| Invaluement URI | Domains found in spam message content. |
| Nordspam DBL | Domains seen in spam. |
| SEM FRESH, SEM URI, SEM URIRED | Newly registered domains and domains found in spam content. |
| SORBS RHSBL BADCONF, SORBS RHSBL NOMAIL | Domains with broken mail configuration, or domains that say they don't send mail. |
How inventory stays clean
- Unsold marketplace domains are rechecked every day.
- A domain found on a blocklist is taken off the marketplace and stops warming.
- A domain whose last check came back listed is never shown for sale, even before the daily recheck catches up.
What's next
Frequently asked questions
Which blocklists does Winnr check?
Nine domain blocklists. Spamhaus DBL, SURBL Multi, Invaluement URI, Nordspam DBL, SEM FRESH, SEM URI, SEM URIRED, SORBS RHSBL BADCONF and SORBS RHSBL NOMAIL.
How fresh is the result?
Clicking the shield runs a live lookup. If the same domain was checked in the last 5 minutes, you see that result instead, marked as cached, with its timestamp. The Re-check button in the results window runs it again.
What does "Rate Limited" mean in the results?
The blocklist declined to answer that lookup at that moment. It is not a listing. Wait a few minutes and click Re-check.
Can a listed domain be bought?
Listed domains are hidden from the marketplace, and unsold inventory is rechecked every day. If you ever see a red shield on a listing, pick a different domain.
What if a domain gets listed after I buy it?
Blocklist status can change at any time, and the marketplace check covers listings for sale, not domains you already own. If you think a domain you bought has been listed, see [What to do if your domain gets blocklisted](/help/troubleshooting/domain-on-blocklist.html) and contact support@winnr.app.
Are all blocklists equally important?
No. Spamhaus DBL is the one with the widest impact on inbox placement. The others are used by fewer mail systems, so a listing there usually has a smaller effect.
Can I filter the marketplace by blocklist status?
Yes. The Blocklist filter above the table offers Clean Only and Unchecked.