post_install() {
 	if ! getent passwd mgraph &>/dev/null; then
		useradd -r -d /var/lib/mailgraph -g adm -s /bin/false mgraph
	fi

	chown -R mgraph:adm /var/lib/mailgraph
	chown -R mgraph:adm /var/log/mailgraph
}

post_upgrade() {
	post_install $1
}

post_remove() {
	if getent passwd mgraph &>/dev/null; then
		userdel mgraph >/dev/null
	fi
}