Fix guide

Blacklist listing detected

What to do when a domain or sending IP appears on a reputation blacklist.

Needs attention

Why this matters

Some blacklist listings are noisy, but a relevant listing on the sending domain or IP can explain broad spam placement.

Delisting without fixing the underlying cause usually leads to repeat listings.

How to fix it

Confirm the listed asset is actually in the sending path. Review recent complaint, bounce, compromise, and volume-change history.

Fix the cause first, pause risky sends if needed, then follow the blacklist provider's delisting process and retest placement.