mailq

The name mailq (a synonym for the -bp command-line switch) causes sendmail to print the contents of its mail queues and then exit (Printing the Queue on page 422).

Note that the location of the queues is set with the QueueDirectory option (QueueDirectory on page 1070). That location can be overridden from the command line, but if it is, sendmail might give up its special privileges (unless it was run by root).

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