Exchange 2013 POP3被inactive无法连接

【问题描述】
=======================两台CAS服务器中有一台CAS服务器POP3无法连接。经过测试有问题的CAS服务器：
1、telnet 127.0.0.1 110的端口有回显：


2、但是如果连接网卡绑定的IP则连接上没有回显：


3、其它服务都是正常，比如smtp的25


【解决方法】
=======================经过分析造成这个问题的原因，可能Managed Availability（MA）对应Component被inactive造成的，需要手动激活：1. 使用以下命令检查CAS服务器的ServerCommponentstate状态Get-ServerComponentState -Identity srvcas001



2. 使用以下命令将State为非Active的组件进行激活：
Set-ServerComponentState -Identity srvcas001 -Component PopProxy -Requester HealthApi -State Active



3. 再次检查该组件状态：



4. 测试telnet是否正常：



【参考信息】
=======================

http://blogs.technet.com/b/exchange/archive/2013/09/26/server-component-states-in-exchange-2013.aspxhttp://blogs.technet.com/b/ehlro/archive/2014/02/20/exchange-2013-managed-availability-healthset-troubleshooting.aspxhttps://social.technet.microsoft.com/Forums/exchange/en-US/5f1a2cee-19ad-43e6-b281-bb7f094d8c09/pop-works-via-localhost-but-not-from-other-networked-machines?forum=exchangesvrclients https://social.microsoft.com/Forums/pt-BR/57da28d3-9882-4836-9bbb-35f1d91cddf8/exchange2013pop?forum=exchangeserverzhchs http://blog.jasonsherry.net/2014/08/19/exchange-2013-pop3-service-drops-connections-fix/ http://jermsmit.com/fixed-pop3-service-after-exchange-2013-cu6/ http://msexchangeguru.com/2014/12/01/server-component-state/ http://careexchange.in/popproxytestprobeimapproxytestprobe-is-failing-on-exchange-server-2013/https://technet.microsoft.com/zh-CN/library/jj218699(v=exchg.150).aspxhttp://blogs.technet.com/b/ehlro/archive/2014/02/20/exchange-2013-managed-availability-healthset-troubleshooting.aspx