Online Tool Store
Kiểm Tra Danh Sách Đen Email
Xây dựng tra cứu DNSBL chính xác cho IP máy chủ thư, với lệnh dig và nslookup chạy được, ý nghĩa mã lỗi và liên kết hủy danh sách.
🔒 Công cụ này chạy hoàn toàn trên trình duyệt của bạn. Tệp của bạn không bao giờ được tải lên máy chủ.
The IP that actually sends your mail, not your website's. Check a bounce message, or your SPF record.
Run these
An answer means listed. NXDOMAIN — "no such name" — means not listed, which is the result you want.
The lists worth checking
| List | What it lists | Codes | Delisting |
|---|
Being on a list is a symptom. Delisting without fixing the cause gets you relisted within days, so the order of work is: find what sent the mail, stop it, then request removal. Common causes are a compromised mailbox, a web form with no rate limit, a misconfigured relay, or a shared IP where somebody else on the same host is the problem.
How Kiểm Tra Danh Sách Đen Email works
- Open Kiểm Tra Danh Sách Đen Email and review the example state before entering your own values.
- Enter or select the information needed for Kiểm Tra Danh Sách Đen Email.
- Review the result and adjust the inputs if you want to compare another case.
Construct the exact DNSBL lookups for a mail server IP, with runnable dig and nslookup commands, return-code meanings and delisting links. The interactive workspace runs in your browser, so you can review the result without creating an account.
FAQ
What is Kiểm Tra Danh Sách Đen Email used for?
Construct the exact DNSBL lookups for a mail server IP, with runnable dig and nslookup commands, return-code meanings and delisting links.
Do I need an account?
No. The tool is available directly in the browser without an account or sign-up.
What should I do if the result looks unexpected?
Check the entered values and compare them with the guidance shown in Kiểm Tra Danh Sách Đen Email. Use the result as a planning aid and verify important decisions independently.