~ email tools

Blacklist Check

Blacklist Check helps identify whether an IP address or domain appears on reputation lists that may affect email delivery, VoIP trust, or general abuse investigations.

What It Checks

• Common DNSBL-style lists.
• IP or domain listing status.
• Positive hits that may require deeper investigation.
• Clean results across checked sources.

When To Use It

Use it when email is rejected, calls are flagged, a customer reports reputation issues, or a server may have sent unwanted traffic.

How To Act

• Treat a listing as a lead, not a complete diagnosis.
• Check mail logs, authentication, and traffic history.
• Use provider delisting instructions only after fixing the root cause.