Old Hand's Space -- Blacklist Download Bad SMTP Client IPs

Blacklist Metadata

Downloads

• Blacklist (CSV.ZST)
• Metadata (XML)

About this Blacklist

My systems gather information about SMTP clients or contacts in general. I collect this information in a database and score these clients based on their behaviour over the last 180 days and their name. The name is used if I know it designates a port scanner, for instance.

Every client on this list has demonstrated extensive bad behaviour. This list is generated automatically. If you want to be removed, cease the behaviour that brought you onto this list. There is no other removal process.

The list consists of CSV data (colon-separated values) compressed with zstd and will be updated every 24 hours.

The fields are:

• IP address of the client; this is the primary key.
• The assigned score – the higher the score, the worse the behaviour and the more recent the activity.
• Human-readable reasons for inclusion on the list.
• Name associated with the IP in DNS (if forward and reverse mapped); otherwise unknown.
• Country identified by my system for this IP.

License

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You might also be interested in these pages:

• Blacklists have Bias
• Zero Trust
• How to provide feedback