POP3 connections issues on ZCS community server

[jameztcc]

Hi,
I am using ZCS 4.0.5_GA_518, encountered POP3 connection issues recently.
There are a couple of errors but am not sure how related are they to the event. Any help to identify the issue and thus prevent it from happening would be great.
thanks,

James


---zimbra.log---

2008-09-07 08:34:25,602 INFO [Pop3Server-5522] [] ProtocolHandler - Exception occurred while handling connection

java.io.IOException: Broken pipe

at sun.nio.ch.FileDispatcher.write0(Native Method)

at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:29)

at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:104)

at sun.nio.ch.IOUtil.write(IOUtil.java:75)

at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:302)

at java.nio.channels.Channels.write(Channels.java:60)

at java.nio.channels.Channels.access$000(Channels.java:47)

at java.nio.channels.Channels$1.write(Channels.java:134)

at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)

at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)

at com.zimbra.cs.pop3.Pop3Handler.sendLine(Pop3Handler.java:383)

at com.zimbra.cs.pop3.Pop3Handler.sendResponse(Pop3Handler.java:372)

at com.zimbra.cs.pop3.Pop3Handler.sendOK(Pop3Handler.java:355)

at com.zimbra.cs.pop3.Pop3Handler.setupConnection(Pop3Handler.java:116)

at com.zimbra.cs.tcpserver.ProtocolHandler.run(ProtocolHandler.java:196)

at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Thread.java:595)