...After this, unzip the file and open in your browser this file: pif-sqlobjects-1.0_reference_manual.htm.
Further information and how to are contained in it.
A sendmail Milter written in Python. It rejects Mail containing certain attachment filenames (.exe, .pif ..., configurable) or containing a virus (calling a single-user license commandline scanner) by answering the smtp DATA step with "554 5.7.1". Thus