The postfix-logwatch and amavis-logwatch utilities are postfix and amavisd-new log analyzers that produce summaries, reports and statistics regarding the operation of postfix and amavis. Either utility can be used as a standalone program, or as a filter module for the open source logwatch utility.
The output produced by the utilities is user-configurable, ranging from brief summary reports for a quick overview of general operations, to highly detailed reports, which are hierarchically-arranged in sections for easy report scanning. The various report sections can assist in spotting reject, malware, virus, and mail trends, produce comprehensive or top N lists, call out mail server problems, and aid in tuning your mail systems.