One of the users on our server is receiving this error report by email 6-7 times daily.

Does anyone know what it means?


Product name: Zimbra Desktop
Product version: 7.1.2
Build ID: 10978
Release type: GA
OS Platform: Mac OS X i386 10.6.8
Time of event: 2011-12-22 07:43:19
Error type: zclient.IO_ERROR
Item ID: 1
Error summary: Sync failed due to IOException for the following items
Items will be retried on next sync
Item Id: 9738 Message: PushChanges.sync


Failure details - PLEASE REMOVE ANY SENSITIVE INFORMATION
----------------------------------------------------------------------------

com.zimbra.common.zclient.ZClientException: Broken pipe
ExceptionId:sync-mbox-username@domain.com:1324568599285:87e1bf97d4cd9fe9
Code:zclient.IO_ERROR
at com.zimbra.common.zclient.ZClientException.IO_ERRO R(ZClientException.java:45)
at com.zimbra.cs.zclient.ZMailbox.uploadContentAsStre am(ZMailbox.java:1906)
at com.zimbra.cs.mailbox.PushChanges.uploadMessage(Pu shChanges.java:468)
at com.zimbra.cs.mailbox.PushChanges.syncMessage(Push Changes.java:1212)
at com.zimbra.cs.mailbox.PushChanges.sync(PushChanges .java:303)
at com.zimbra.cs.mailbox.PushChanges.sync(PushChanges .java:193)
at com.zimbra.cs.mailbox.MailboxSync.sync(MailboxSync .java:168)
at com.zimbra.cs.mailbox.ZcsMailbox.sync(ZcsMailbox.j ava:121)
at com.zimbra.cs.mailbox.ZcsMailbox.syncOnTimer(ZcsMa ilbox.java:102)
at com.zimbra.cs.mailbox.SyncMailbox$1.run(SyncMailbo x.java:257)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)
Caused by: java.net.SocketException: Broken pipe
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutp utStream.java:92)
at java.net.SocketOutputStream.write(SocketOutputStre am.java:136)
at com.sun.net.ssl.internal.ssl.OutputRecord.writeBuf fer(OutputRecord.java:297)
at com.sun.net.ssl.internal.ssl.OutputRecord.write(Ou tputRecord.java:286)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRe cordInternal(SSLSocketImpl.java:748)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRe cord(SSLSocketImpl.java:736)
at com.sun.net.ssl.internal.ssl.AppOutputStream.write (AppOutputStream.java:88)
at java.io.BufferedOutputStream.write(BufferedOutputS tream.java:105)
at org.apache.commons.httpclient.methods.InputStreamR equestEntity.writeRequest(InputStreamRequestEntity .java:171)
at org.apache.commons.httpclient.methods.EntityEnclos ingMethod.writeRequestBody(EntityEnclosingMethod.j ava:499)
at org.apache.commons.httpclient.HttpMethodBase.write Request(HttpMethodBase.java:2114)
at org.apache.commons.httpclient.HttpMethodBase.execu te(HttpMethodBase.java:1096)
at org.apache.commons.httpclient.HttpMethodDirector.e xecuteWithRetry(HttpMethodDirector.java:398)
at org.apache.commons.httpclient.HttpMethodDirector.e xecuteMethod(HttpMethodDirector.java:171)
at org.apache.commons.httpclient.HttpClient.executeMe thod(HttpClient.java:397)
at com.zimbra.common.httpclient.HttpClientUtil.execut eMethod(HttpClientUtil.java:55)
at com.zimbra.common.httpclient.HttpClientUtil.execut eMethod(HttpClientUtil.java:41)
at com.zimbra.cs.zclient.ZMailbox.uploadContentAsStre am(ZMailbox.java:1896)
... 10 more