What are the prerequisites for installing MIMEDefang?

The following software is required for MIMEDefang:

• A UNIX or UNIX-like operating system. MIMEDefang is known to run on Linux, FreeBSD, OpenBSD, NetBSD, Solaris, HP-UX, Tru64 UNIX, and AIX.
• Sendmail 8.12 or newer with Milter support.
• Perl 5.8.9 or newer.
• The following Perl modules:
  • MIME::tools 5.420 or higher
  • IO::Stringy 1.212 or higher
  • MIME::Base64 2.11 or higher
  • MailTools 1.1401 or higher
  • Digest::SHA1 2.00 or higher
• (Optional) Other Perl modules like Mail::SpamAssassin
• A C compiler and C development environment