renattach
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Filter to rename or delete potentially dangerous e-mail attachments

A fast and efficient UNIX stream filter that can rename or delete
potentially dangerous e-mail attachments. It's a highly effective way
of protecting end-users from harmful mail content (worms/viruses) by
disabling or removing attachments that may be accidentally executed by
users. The filter is invoked as a simple pipe for use in a wide
variety of systems. The 'kill' feature (which eliminates entire
messages) can also help sites deal with resource strains caused by
modern virus floods.

Unlike a conventional virus scanner, there are no specific virus or
worm definitions. Instead, renattach identifies potentially dangerous
attachments based on file extension and executable encoded body
content. The software is even capable of reading filenames from inside
ZIP archives on the fly, without requiring any external software. The
self-contained MIME code parses, fully interprets, then rewrites the
header of every attached file. During this process it checks the
file's extension against a list, and further checks to make sure the
filename is not on a banned list. Only after passing through these
steps is the MIME header written fresh using a predetermined, known
format.

The program's operation is simple: a single mail message is read from
stdin, filtered, then written to stdout (or piped to an external
command).

Runtime requirements:
  cygwin

Build requirements:
  cygwin

Canonical homepage:
  http://packages.debian.org/renattach
  http://www.pc-tools.net/unix/renattach

Canonical download:
  See above

Version control repository:

Mailing list:

Forum / Wiki:

IRC channel:

Upstream contact:
  Author:  Jem E. Berkes <info at pc-tools.net>
  Bugs: <support at pc-tools.net>

License:
  GPL

Language:
  C

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Build instructions:
  unpack renattach-*-src.tar.bz2
    if you use setup to install this src package, it will be
    unpacked under /usr/src automatically
  cd /usr/src
  ./renattach*.sh all

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Files included in the binary distro:
  See content of *.tar.gz

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Port Notes:

----- version 1.2.4-2 -----
- Packaging update

----- version 1.2.4-1 -----
- Initial release 2008-02-26 Jari Aalto

Cygwin port maintained by: Jari Aalto <jari.aalto at cante.net>
Copyright (C) 2008-2014 Jari Aalto; Licensed under GPL v2 or later