问题：我的tomcat 8安装正在以垃圾邮件的形式发送垃圾邮件。
说明： 控制台（我正在读取 catalina.out 文件中的内容）显示了很好的日志记录级别，其中有很多类似这样的消息：
精细：在1531987122838处启动过期会话StandardManager sessioncount 0 lug 19，2018 9:58:42 AM org.apache.catalina.session.ManagerBase processExpires
精细：结束过期会话StandardManager处理时间0过期会话：0 吊耳19，2018 9:58:47 AM org.apache.catalina.authenticator.AuthenticatorBase调用
精细：安全检查请求POST / Artemide / HEARTBEAT / lug 19，2018 上午9:58:47 org.apache.catalina.authenticator.AuthenticatorBase调用
精细：不受任何限制凸耳19，2018 9:59:02 AM org.apache.catalina.authenticator.AuthenticatorBase调用
精细：安全检查请求GET / Artemide / PUSH lug 19，2018 9:59:02 AM org.apache.catalina.authenticator.AuthenticatorBase调用
我所做的事情：
我遵循了一个教程，该教程教导将文件logging.properties放入tomcat安装路径内的文件夹conf中。这是内容，但仍然无法正常工作。
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
handlers = 1catalina.org.apache.juli.AsyncFileHandler, 2localhost.org.apache.juli.AsyncFileHandler, 3manager.org.apache.juli.AsyncFileHandler, 4host-manager.org.apache.juli.AsyncFileHandler, java.util.logging.ConsoleHandler
.handlers = 1catalina.org.apache.juli.AsyncFileHandler, java.util.logging.ConsoleHandler
############################################################
# Handler specific properties.
# Describes specific configuration info for Handlers.
############################################################
1catalina.org.apache.juli.AsyncFileHandler.level = WARNING
1catalina.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
1catalina.org.apache.juli.AsyncFileHandler.prefix = catalina.
2localhost.org.apache.juli.AsyncFileHandler.level = WARNING
2localhost.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
2localhost.org.apache.juli.AsyncFileHandler.prefix = localhost.
3manager.org.apache.juli.AsyncFileHandler.level = WARNING
3manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
3manager.org.apache.juli.AsyncFileHandler.prefix = manager.
4host-manager.org.apache.juli.AsyncFileHandler.level = WARNING
4host-manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
4host-manager.org.apache.juli.AsyncFileHandler.prefix = host-manager.
java.util.logging.ConsoleHandler.level = WARNING
java.util.logging.ConsoleHandler.formatter = org.apache.juli.OneLineFormatter
############################################################
# Facility specific properties.
# Provides extra control for each logger.
############################################################
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 2localhost.org.apache.juli.AsyncFileHandler
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].handlers = 3manager.org.apache.juli.AsyncFileHandler
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].handlers = 4host-manager.org.apache.juli.AsyncFileHandler
# For example, set the org.apache.catalina.util.LifecycleBase logger to log
# each component that extends LifecycleBase changing state:
org.apache.catalina.util.LifecycleBase.level = WARNING
# To see debug messages in TldLocationsCache, uncomment the following line:
#org.apache.jasper.compiler.TldLocationsCache.level = WARNING
# To see debug messages for HTTP/2 handling, uncomment the following line:
#org.apache.coyote.http2.level = WARNING
# To see debug messages for WebSocket handling, uncomment the following line:
org.apache.tomcat.websocket.level = WARNING
org.apache.catalina.core.StandardContext.level = WARNING
org.apache.tomcat.util.digester.Digester.level = WARNING
问题： 我不知道要降低tomcat的loggin级别必须调整的位置。