Deliverability1 min read
Email Blacklist Check: What to Do If Your Domain Gets Listed
DNSBLs, spamhaus listings, and remediation steps for small businesses — prevention via authentication and hygiene.
Blocklists aggregate IPs and domains seen in spam traps. Legitimate small businesses rarely land on major lists unless compromised or sending to scraped addresses.
If you are listed
- Identify which list via multi-RBL lookup tools
- Stop outbound mail until root cause is fixed
- Fix open relays, stolen API keys, or bad lists
- Request delisting per provider instructions
- Improve DMARC and monitor for 30 days
Want to see how your own domain is set up? Use the free DMARC checker: it runs in your browser and stores nothing.