What to Do When Your Domain Gets Blacklisted

A blacklisted domain is a deliverability emergency. Here is the immediate action plan. Step 1: Confirm the blacklisting Use the free blacklist checker at Warm Inboxes to identify which blacklists your domain is on. Not all blacklists are equal — being on Spamhaus is far more serious than being on a minor list. Step 2: Stop all campaigns Immediately pause all campaigns from the affected domain. Continuing to send compounds the damage. Step 3: Identify the cause High bounce rates? Spam trap hits? Volume spike? Spam complaints? The blacklist listing often provides context about why you were listed. Review your recent sending behavior and lists for the trigger. Step 4: Fix the cause Clean your lists. Reduce volume. Fix any authentication issues. Remove any problematic content. Step 5: Request delisting Visit the blacklist's website. Search for your domain. Follow the delisting procedure. Most blacklists have a self-service process. You may need to explain what caused the issue and what steps you have taken to prevent recurrence. Step 6: Warmup recovery After delisting, run intensive warmup on the domain for 14 to 21 days before resuming campaigns. Step 7: Gradual campaign restart Resume campaigns at reduced volume. Monitor deliverability daily using the deliverability checker.

When to retire the domain

If the domain is on Spamhaus or has been listed multiple times, retirement may be the best option. Replace with fresh domains from Warm Inboxes and apply the lessons learned to prevent repeating the mistake.

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