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- The postfix: command CONTROLS the operation of the mail system. It is the interface for starting, stopping, and restarting the mail system. This command is reserved to the super-user.
- The postalias: command maintains Postfix aliases type databases. This is the program that does the work for the newaliases command.
- The postcat: command displays the contents of Postfix queue files. This is a limited, preliminary utility. This program is likely to be superseded by something more powerful that can also edit Postfix queue files.
- The postconf: command displays or updates Postfix main.cf parameters and displays system dependent information about the SUPPORTED file locking methods, and the supported types of lookup tables.
- The postdrop: command is the mail posting utility that is run by the Postfix sendmail command in order to deposit mail into the maildrop queue directory.
- The postkick: command makes some Postfix internal communication channels available for use in, for example, shell scripts.
- The postlock: command provides Postfix-compatible mailbox locking for use in, for example, shell scripts.
- The postlog: command provides Postfix-compatible logging for shell scripts.
- The postmap: command maintains Postfix lookup tables such as canonical, virtual and others. It is a cousin of the UNIX makemap command.
- The postmulti: command repeats the "postfix start" etc. command for each Postfix instance, and supports creation, DELETION etc. of Postfix instances. For a tutorial, SEE MULTI_INSTANCE_README.
- The postqueue: command is the privileged command that is run by Postfix sendmail and mailq in order to flush or list the mail queue.
- The postsuper: command maintains the Postfix queue. It removes old temporary files, and MOVES queue files into the right directory after a change in the hashing depth of queue directories. This command is run at mail system startup time and when Postfix is restarted.
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