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$ pwd: /usr/share/webmin/postfix/help/
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File: //usr/share/webmin/postfix/help/opt_process_id_directory.html
<header>Lock file dir, relative to queue dir</header>

<center><tt>process_id_directory</tt></center>
<hr>

Specify a lock file directory relative to the Postfix queue directory. This
facility is used by the master daemon to lock out other master daemon
instances.

<hr>
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