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<header>Shell to use for delivery to external command</header> <center><tt>local_command_shell</tt></center> <hr> This parameter controls what shell will be used for delivery to external command. By default, external commands are executed directly; commands are given to <tt>/bin/sh</tt> only when they contain shell meta characters or shell built-in commands. <p> Specify a different shell when you need more control over what programs can be run from e.g. <tt>.forward</tt> files. <p> "sendmail's restricted shell" <tt>smrsh</tt> is what most people will use (<tt>smrsh</tt> is part of recent sendmail distributions) <p> Note: when a shell is specified, it is invoked even when the command contains no shell built-in commands or meta characters. <p> Example: <tt>/some/where/smrsh -c</tt> <p> <hr>