Mac OS X Server 10.2: How to Turn off Automatic MacBinary Encoding
The FTP Server in Mac OS X Server 10.2 automatically encodes some files in MacBinary, adding the filename extension ".bin". This document explains how to disable this feature.
To turn off the automatic MacBinary-encoding feature, edit the file /Library/FTPServer/Configuration/ftpaccess to add this line to the end of the file:
Note: Many Macintosh FTP clients automatically encode the file in the format dictated by their preference settings prior to posting to the server. For more information on this feature, see technical document 107171, "Mac OS X Server 10.2: About FTP Macbinary Encoding and Name Listing".