On 10/11/07, Ben <ben(_at_)benjamin(_dot_)it> wrote:
Regarding the lock file when piping to another program, the manual says
that you should not use a lock file when piping, unless the program you are
piping to outputs to a file, in which case this program does so that's why I
use a lock file for that rule.
"Outputs to a file" means to use shell redirection with ">file" or
">>file". It does not mean programs that write to some file whose
name is hardwired within their code so that procmail cannot determine
the file name; such programs need to employ their own locking scheme
if locking is important.
If you need to have procmail do locking for such a program because the
program will not reliably do so, then you need to explicitly assign to
LOCKFILE, not use implicit rule locking.
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