This file is indexed.

postinst is in dovecot-mysql 1:2.0.19-0ubuntu1.

This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.

The actual contents of the file can be viewed below.

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#!/bin/sh

set -e

if [ -x "/etc/init.d/dovecot" ]; then
	if [ -x /usr/sbin/invoke-rc.d ]; then
		invoke-rc.d dovecot restart
	else
		/etc/init.d/dovecot restart
	fi
fi