Guys,
I've posted on a closed thread and now I'm opening a new one in order to do the right thing. [Newbie]

Version info :
Release 7.1.4_GA_2555.RHEL6_64_20120105094542 CentOSUNKNOWN_64 FOSS edition.
Running under VmWare ESX 4.1.

Problem :
There's a specific account which has a problem as the log (/opt/zimbra/log/mailbox.log) says below. With a message being recognized as a TNEF message possibly an ICalendar message being unprocessed. But this is putting the processing at the top and makes the server hang for a while.
I've already tried to change the javamail_zparser on zmmailboxdctl [that was true I've put false], with no success. I'm trying to figure out something else to do, and by now I have nothing on my mind. I need some help !
Thanks in advance


2013-08-12 08:10:36,574 INFO [LmtpServer-3] [name=account@domain.com;mid=87;ip=192.168.0.x;] tnef - Calendaring TNEF message mapped to ICALENDAR with UID=040000008200E00074C5B7101A82E00800000000809AA2 AF68D8CD01000000000000000010000000BB62690EDF0A8F40 A2F9BFB776EB68A3
2013-08-09 08:10:36,574 INFO [LmtpServer-3] [name=account@domain.com;mid=87;ip=192.168.0.x;] tnef - Calendaring TNEF message mapped to ICALENDAR with UID=040000008200E00074C5B7101A82E00800000000809AA2 AF68D8CD01000000000000000010000000BB62690EDF0A8F40 A2F9BFB776EB68A3
2013-08-09 08:10:38,648 INFO [LmtpServer-3] [name=account@domain;mid=87;ip=192.168.0.x;] tnef - Calendaring TNEF message mapped to
ICALENDAR with UID=040000008200E00074C5B7101A82E00800000000809AA2 AF68D8CD01000000000000000010000000BB62690EDF0A8F40 A2F9BFB776EB68A3


2013-08-12 08:14:41,323 WARN [LmtpServer-20] [name=account@domain.com;mid=87;ip=192.168.0.x;] ParsedMessage - Unable to parse

part=2.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.2.2 1 filename= content-type=message/rfc822 message-

id=<486340632.89858.1376306076250.JavaMail.root@se rver.domain.com>
com.zimbra.cs.mime.MimeHandlerException: No content
at com.zimbra.cs.mime.handler.MessageRFC822Handler.ge tContentImpl(MessageRFC822Handler.java:73)
at com.zimbra.cs.mime.MimeHandler.getContent(MimeHand ler.java:157)
at com.zimbra.cs.mime.ParsedMessage.analyzePart(Parse dMessage.java:1060)
at com.zimbra.cs.mime.ParsedMessage.analyzeNonBodyPar ts(ParsedMessage.java:420)
at com.zimbra.cs.mime.ParsedMessage.analyzeFully(Pars edMessage.java:454)
at com.zimbra.cs.mailbox.CalendarItem.getIndexDocumen ts(CalendarItem.java:380)
at com.zimbra.cs.mailbox.CalendarItem.generateIndexDa ta(CalendarItem.java:258)
at com.zimbra.cs.mailbox.IndexHelper.indexItemList(In dexHelper.java:828)
at com.zimbra.cs.mailbox.IndexHelper.indexDeferredIte msInternal(IndexHelper.java:354)
at com.zimbra.cs.mailbox.IndexHelper.indexDeferredIte ms(IndexHelper.java:274)
at com.zimbra.cs.mailbox.IndexHelper.maybeIndexDeferr edItems(IndexHelper.java:230)
at com.zimbra.cs.mailbox.Mailbox.addMessage(Mailbox.j ava:4697)
at com.zimbra.cs.mailbox.Mailbox.addMessage(Mailbox.j ava:4690)
at com.zimbra.cs.mailbox.Mailbox.addMessage(Mailbox.j ava:4638)
at com.zimbra.cs.filter.IncomingMessageHandler.addMes sage(IncomingMessageHandler.java:122)
at com.zimbra.cs.filter.IncomingMessageHandler.implic itKeep(IncomingMessageHandler.java:116)
at com.zimbra.cs.filter.ZimbraMailAdapter.doDefaultFi ling(ZimbraMailAdapter.java:343)
at com.zimbra.cs.filter.ZimbraMailAdapter.executeActi ons(ZimbraMailAdapter.java:215)
at org.apache.jsieve.SieveFactory.evaluate(SieveFacto ry.java:173)
at com.zimbra.cs.filter.RuleManager.applyRulesToIncom ingMessage(RuleManager.java:401)
at com.zimbra.cs.filter.RuleManager.applyRulesToIncom ingMessage(RuleManager.java:363)
at com.zimbra.cs.lmtpserver.ZimbraLmtpBackend.deliver MessageToLocalMailboxes(ZimbraLmtpBackend.java:571 )
at com.zimbra.cs.lmtpserver.ZimbraLmtpBackend.deliver (ZimbraLmtpBackend.java:370)
at com.zimbra.cs.lmtpserver.LmtpHandler.processMessag eData(LmtpHandler.java:367)
at com.zimbra.cs.lmtpserver.TcpLmtpHandler.continueDA TA(TcpLmtpHandler.java:72)
at com.zimbra.cs.lmtpserver.LmtpHandler.doDATA(LmtpHa ndler.java:356)
at com.zimbra.cs.lmtpserver.LmtpHandler.processComman d(LmtpHandler.java:172)
at com.zimbra.cs.lmtpserver.TcpLmtpHandler.processCom mand(TcpLmtpHandler.java:65)
at com.zimbra.cs.tcpserver.ProtocolHandler.processCon nection(ProtocolHandler.java:199)
at com.zimbra.cs.tcpserver.ProtocolHandler.run(Protoc olHandler.java:140)
at java.util.concurrent.ThreadPoolExecutor$Worker.run Task(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.IOException: No content
at javax.mail.internet.MimePartDataSource.getInputStr eam(MimePartDataSource.java:108)
at com.zimbra.cs.mime.handler.MessageRFC822Handler.ge tContentImpl(MessageRFC822Handler.java:57)
... 32 more


2013-08-12 08:18:11,940 FATAL [LmtpServer-20] [name=account@domain.com;mid=87;ip=192.168.0.x;] system - out of memory
java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:2882)
at java.lang.AbstractStringBuilder.expandCapacity(Abs tractStringBuilder.java:100)
at java.lang.AbstractStringBuilder.append(AbstractStr ingBuilder.java:390)
at java.lang.StringBuilder.append(StringBuilder.java: 119)
at com.zimbra.cs.mime.ParsedMessage.appendToContent(P arsedMessage.java:1141)
at com.zimbra.cs.mime.ParsedMessage.analyzeNonBodyPar ts(ParsedMessage.java:422)
at com.zimbra.cs.mime.ParsedMessage.analyzeFully(Pars edMessage.java:454)
at com.zimbra.cs.mailbox.CalendarItem.getIndexDocumen ts(CalendarItem.java:380)
at com.zimbra.cs.mailbox.CalendarItem.generateIndexDa ta(CalendarItem.java:258)
at com.zimbra.cs.mailbox.IndexHelper.indexItemList(In dexHelper.java:828)
at com.zimbra.cs.mailbox.IndexHelper.indexDeferredIte msInternal(IndexHelper.java:354)
at com.zimbra.cs.mailbox.IndexHelper.indexDeferredIte ms(IndexHelper.java:274)
at com.zimbra.cs.mailbox.IndexHelper.maybeIndexDeferr edItems(IndexHelper.java:230)
at com.zimbra.cs.mailbox.Mailbox.addMessage(Mailbox.j ava:4697)
at com.zimbra.cs.mailbox.Mailbox.addMessage(Mailbox.j ava:4690)
at com.zimbra.cs.mailbox.Mailbox.addMessage(Mailbox.j ava:4638)
at com.zimbra.cs.filter.IncomingMessageHandler.addMes sage(IncomingMessageHandler.java:122)
at com.zimbra.cs.filter.IncomingMessageHandler.implic itKeep(IncomingMessageHandler.java:116)
at com.zimbra.cs.filter.ZimbraMailAdapter.doDefaultFi ling(ZimbraMailAdapter.java:343)
at com.zimbra.cs.filter.ZimbraMailAdapter.executeActi ons(ZimbraMailAdapter.java:215)
at org.apache.jsieve.SieveFactory.evaluate(SieveFacto ry.java:173)
at com.zimbra.cs.filter.RuleManager.applyRulesToIncom ingMessage(RuleManager.java:401)
at com.zimbra.cs.filter.RuleManager.applyRulesToIncom ingMessage(RuleManager.java:363)
at com.zimbra.cs.lmtpserver.ZimbraLmtpBackend.deliver MessageToLocalMailboxes(ZimbraLmtpBackend.java:571 )
at com.zimbra.cs.lmtpserver.ZimbraLmtpBackend.deliver (ZimbraLmtpBackend.java:370)
at com.zimbra.cs.lmtpserver.LmtpHandler.processMessag eData(LmtpHandler.java:367)
at com.zimbra.cs.lmtpserver.TcpLmtpHandler.continueDA TA(TcpLmtpHandler.java:72)
at com.zimbra.cs.lmtpserver.LmtpHandler.doDATA(LmtpHa ndler.java:356)
at com.zimbra.cs.lmtpserver.LmtpHandler.processComman d(LmtpHandler.java:172)
at com.zimbra.cs.lmtpserver.TcpLmtpHandler.processCom mand(TcpLmtpHandler.java:65)
at com.zimbra.cs.tcpserver.ProtocolHandler.processCon nection(ProtocolHandler.java:199)
at com.zimbra.cs.tcpserver.ProtocolHandler.run(Protoc olHandler.java:140)