Blacklist monitoring
Detect public reputation listings that can affect email delivery.
Live tool
Check reputation
What is it?
Blocklist services publish IPs associated with spam, abuse, or compromised infrastructure.
Why is it important?
Listings can cause legitimate messages to be rejected or routed to spam.
How do you improve it?
Investigate the cause, secure compromised accounts, improve sending practices, and follow each list’s delisting process.
How DomainShield Tower checks it
We inspect publicly available DNS, TLS, website, and reputation signals and explain the result in a report. Scanning is read-only and does not change your infrastructure.
Take the next step
Scan your domainRun a live domain scan.
Get a practical report for your domain in seconds.