Author: martins
Downloads: 6197
License: Open Source: GPL
Updated: 17 April 2015
Download Milter


j-chkmail is a complete spam filtering solution including both behavioural filtering (rate limits, greylisting , black and white DNS based lists...) and content filtering (statistical/bayesian content filtering, pattern matching, URL filtering and heuristic filtering).

j-chkmail can detect virus by either by looking for suspicious attached files (defined by their filename extensions or by some regular expression) or with help of an external message scanner such as Clamd (from ClamAV).

j-chkmail was designed to be able to filter as much messages as possible, as fast as possible and as well as possible. Originally, it was intended to be used in large and heterogeneous communities such as university campus, but not only.

Command line tools are included allowing mail admins to get real time information about the filter (counters, statistics, ...) without needing to "grep" log files (which is also available). Modification of many configuration options is possible without stop/starting the filter.

Basic message archiving can be done based on SMTP client address or the (envelope) email address of the sender or recipient.

j-chkmail is compatible IPv6.


A C compiler is the only external requirement, to compile and install the filter.


  • Traffic Shaping
  • Statistics
  • Security
  • Logging
  • Content Monitoring
  • Archiving
  • Anti-Virus
  • Anti-Spam