cyrus-imapd should run under cyrus user

Makefile

 all: cyrus-config imapd-config cyrus-imapd-service
+	rm /etc/passwd
+	mv -v /data/etc/passwd /etc/passwd
+	rm /etc/group
+	mv -v /data/etc/group /etc/group
+	rm /etc/shadow
+	mv -v /data/etc/shadow /etc/shadow
+	rm /etc/gshadow
+	mv -v /data/etc/gshadow /etc/gshadow
+	useradd -c "Cyrus IMAP Server" -d /var/lib/imap -g mail -s /bin/false -u 104 cyrus
+	rm /etc/passwd-
+	rm /etc/group-
+	rm /etc/shadow-
+	rm /etc/gshadow-
+	mv -v /etc/passwd /data/etc/passwd
+	ln -sv /data/etc/passwd /etc/passwd
+	mv -v /etc/group /data/etc/group
+	ln -sv /data/etc/group /etc/group
+	mv -v /etc/shadow /data/etc/shadow
+	ln -sv /data/etc/shadow /etc/shadow
+	mv -v /etc/gshadow /data/etc/gshadow
+	ln -sv /data/etc/gshadow /etc/gshadow
 	tar xf cyrus-imapd-3.2.3.tar.gz
 	cd cyrus-imapd-3.2.3 && ./configure --prefix=/usr
 	$(MAKE) -C cyrus-imapd-3.2.3
 	$(MAKE) -C cyrus-imapd-3.2.3 install
-	install -v -d -m755 /var/lib/imap
-	install -v -d -m755 /var/lib/imap/sieve
-	install -v -d -m755 /var/lib/imap/socket
-	install -v -d -m755 /var/spool/imap
+	install -v -d -m755 -o cyrus -g mail /var/lib/imap
+	install -v -d -m755 -o cyrus -g mail /var/lib/imap/db
+	install -v -d -m755 -o cyrus -g mail /var/lib/imap/sieve
+	install -v -d -m755 -o cyrus -g mail /var/lib/imap/socket
+	install -v -d -m755 -o cyrus -g mail /var/spool/imap
 	install -v -d -m755 /etc/ssl/cyrus-imapd
 	@echo "$$CYRUS_CONFIG" > /etc/cyrus.conf
 	@echo "$$IMAPD_CONFIG" > /etc/imapd.conf