Email blacklistchecker.
Blocklist hits signal reputation problems. Some lists matter to specific providers; others are low-impact — but all deserve investigation.
Runs in the CloudJet console
Full history, exports and monitoring tied to your own domains and mailboxes. Free with every trial.
Or run a free domain health checkWhat this checks,and why.
In one line
A blacklist checker queries major DNSBLs against your IP or domain and reports active listings.
Why it matters
Listings correlate with spam complaints, compromised accounts, or misconfiguration — and can throttle or block delivery.
How to act on it
Check listings, fix the root cause, request delisting where appropriate, then keep monitoring.
Read the result.
How to interpret blacklist results
Not every listing blocks mail globally. Impact depends on which receivers consult which lists.
Repeated listings after delisting usually mean the underlying sending problem was not fixed.
Questions, answered.
Not always. Delisting without fixing list quality, authentication, or compromised accounts often leads to re-listing.
Fix it once.Watch it forever.
CloudJet re-checks every record on every sending domain daily and fixes drift before it costs you the inbox.