AVFILTER: anti virus filter for Courier-MTA using Sophos
 including MIMEC: an utility library for basic mime operations
 Copyright (c) 1999-2001 Alessandro Vesely
 All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted to single individuals and Small Companies,
 provided that the conditions specified below are met. By Small Companies
 I mean companies with less than 100 employees. Companies with 100 or
 more employees may not redistribute nor use this software without
 prior written permission. A single individual who is employed by
 a company with 100 or more employees may use and redistribute this
 software as a single individual, unless it is the policy of the company
 to disallow employees from doing so.

 The condistions for redistributing this software are as follows:

 1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
 3. Except as contained in this notice, the name of Alessandro Vesely
    shall not be used in advertising or otherwise to promote the sale,
    use or other dealings in this Software.

   THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
   WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT
   ARE DISCLAIMED.  IN NO EVENT SHALL ALESSANDRO VESELY BE LIABLE FOR ANY
   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
   IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.