Learning track 08

Reputation & blocklists

Separate domain and IP evidence, understand listings, and act carefully.

Investigate a blocklist listing ↗

Identify the correct IP or domain, confirm the dataset, and act on the underlying cause.

2 min read

Query each supported dataset with the right identifier and interpret its purpose.

2 min read

Explain domain/address signal coverage without implying a universal mailbox blacklist.

2 min read

Use trusted message evidence instead of checking the website hosting IP.

2 min read

Document remediation and follow the list operator’s actual process.

2 min read

Coordinate with the provider and separate customer controls from infrastructure controls.

2 min read

Distinguish a network-use policy from evidence of a compromised server.

2 min read

Inventory relevant link/redirect domains without claiming exhaustive reputation coverage.

2 min read

Preserve unavailable/unknown states and honor licensing and resolver requirements.

2 min read

Combine timestamped observations with bounce trends and provider feedback.

2 min read