Add check if dovecot is enabled

install/upgrade/versions/1.4.8.sh

@@ -17,10 +17,12 @@ if [ "$matches" > 1 ]; then
 	$HESTIA/bin/v-change-sys-config-value "ENFORCE_SUBDOMAIN_OWNERSHIP" "$ENFORCE_SUBDOMAIN_OWNERSHIP"
 fi
 
-version=$(dovecot --version |  cut -f -2 -d .);
-if [ "$version" = "2.3" ]; then 
-	echo "[ * ] Update dovecot config to sync with 2.3 settings"	
-	sed -i 's|ssl_dh_parameters_length = 4096|#ssl_dh_parameters_length = 4096|g' /etc/dovecot/conf.d/10-ssl.conf
-	sed -i 's|#ssl_dh = </etc/ssl/dhparam.pem|ssl_dh = </etc/ssl/dhparam.pem|g' /etc/dovecot/conf.d/10-ssl.conf
-	sed -i 's|ssl_protocols = !SSLv3 !TLSv1|ssl_min_protocol=TLSv1.1|g' /etc/dovecot/conf.d/10-ssl.conf
+if [ "$IMAP_SYSTEM" = "dovecot" ];
+	version=$(dovecot --version |  cut -f -2 -d .);
+	if [ "$version" = "2.3" ]; then 
+		echo "[ * ] Update dovecot config to sync with 2.3 settings"	
+		sed -i 's|ssl_dh_parameters_length = 4096|#ssl_dh_parameters_length = 4096|g' /etc/dovecot/conf.d/10-ssl.conf
+		sed -i 's|#ssl_dh = </etc/ssl/dhparam.pem|ssl_dh = </etc/ssl/dhparam.pem|g' /etc/dovecot/conf.d/10-ssl.conf
+		sed -i 's|ssl_protocols = !SSLv3 !TLSv1|ssl_min_protocol=TLSv1.1|g' /etc/dovecot/conf.d/10-ssl.conf
+	fi
 fi