Configured systemd unit file and periodic update

Makefile

-all:
+all: spamassassin-service sa-update-service sa-update-timer
 	tar xf Mail-SpamAssassin-3.4.4.tar.bz2
 	cd Mail-SpamAssassin-3.4.4 && perl Makefile.PL
 	$(MAKE) -C Mail-SpamAssassin-3.4.4
 	$(MAKE) -C Mail-SpamAssassin-3.4.4 install
+	install -v -Dm755 sa-update.cron /usr/share/spamassassin
+	@echo "$$SPAMASSASSIN_SERVICE" > /lib/systemd/system/spamassassin.service
+	systemctl enable spamassassin.service
+	@echo "$$SA_UPDATE_SERVICE" > /lib/systemd/system/sa-update.service
+	@echo "$$SA_UPDATE_TIMER" > /lib/systemd/system/sa-update.timer
+	install -d -m700 /etc/mail/spamassassin/sa-update-keys
 	rm -rf Mail-SpamAssassin-3.4.4
+
+spamassassin-service:
+define SPAMASSASSIN_SERVICE
+[Unit]
+Description=Spamassassin daemon
+After=syslog.target network.target
+Wants=sa-update.timer
+
+[Service]
+ExecStart=/usr/bin/spamd
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
+endef
+export SPAMASSASSIN_SERVICE
+
+sa-update-service:
+define SA_UPDATE_SERVICE
+### Spamassassin Rules Updates ###
+#
+# http://wiki.apache.org/spamassassin/RuleUpdates
+# 
+# sa-update automatically updates your rules once per day if a spam daemon like
+# spamd or amavisd are running.
+
+[Unit]
+Description=Spamassassin Rules Update
+Documentation=man:sa-update(1)
+
+[Service]
+# Note that the opposite of "yes" is the empty string, NOT "no"
+# Options for the actual sa-update command
+# These are added to the channel configuration from 
+# /etc/mail/spamassassin/channel.d/*.conf
+Environment=OPTIONS=-v
+
+# Debug script - send mail even if no update available
+#Environment=DEBUG=yes
+
+# Send mail when updates successfully processed
+# Default: send mail only on error
+#Environment=NOTIFY_UPD=yes
+
+ExecStart=/usr/share/spamassassin/sa-update.cron
+
+SuccessExitStatus=1
+endef
+export SA_UPDATE_SERVICE
+
+sa-update-timer:
+define SA_UPDATE_TIMER
+### Spamassassin Rules Updates ###
+#
+# http://wiki.apache.org/spamassassin/RuleUpdates
+#
+# sa-update automatically updates your rules once per day if a spam daemon like
+# spamd or amavisd are running.
+
+[Unit]
+Description=Spamassassin Rules Update timer
+Documentation=man:sa-update(1)
+
+[Timer]
+OnCalendar=daily
+
+[Install]
+WantedBy=spamassassin.service
+endef
+export SA_UPDATE_TIMER

sa-update.cron

+#!/bin/bash
+
+# sa-update must create keyring
+if [ ! -d /etc/mail/spamassassin/sa-update-keys ]; then
+    sa-update
+fi
+
+/usr/bin/sa-update
+status=$?
+now=`date +"%d-%b-%Y %T"`
+
+if [ $status -eq 0 ]; then
+	echo "$now: SpamAssassin: Update processed successfully" 
+	systemctl condrestart spamassassin.service >& /dev/null
+	systemctl --quiet is-active mimedefang.service; [ $? -eq 0 ] && systemctl reload mimedefang.service >& /dev/null
+        exit $status
+fi
+if [ $status -eq 1 ]; then
+	echo "$now: SpamAssassin: No update available"
+        exit $status
+fi
+if [ $status -eq 2 ]; then
+        echo "$now: SpamAssassin: Problem applying update - pre files failed lint check"
+        exit $status
+fi
+if [ $status -eq 4 ]; then
+        echo "$now: SpamAssassin: Update available, but download or extract failed"
+        exit $status
+fi
+
+echo "$now: SpamAssassin: Unknown error code $status from sa-update"
+exit $status