Dear All...
i have got problem, last day my server zimbra suddenly cannot send receive email. I try to open zimbra admin console cannot open.
after i restart my server, come back normal again. I check mailbox and i found some error massage like that:

2013-03-04 11:13:55,011 WARN [main] [] redolog - Error while parsing redolog /opt/zimbra/redolog/redo.log, offset=0x0f1e74c5; bad bytes will be skipped
java.io.IOException: Attempted to skip 2382368 bytes at position 253654377 in /opt/zimbra/redolog/redo.log, but actually skipped 1684.
at com.zimbra.cs.redolog.op.CreateMessage.deserialize Data(CreateMessage.java:373)
at com.zimbra.cs.redolog.op.SaveDraft.deserializeData (SaveDraft.java:68)
at com.zimbra.cs.redolog.op.RedoableOp.deserialize(Re doableOp.java:470)
at com.zimbra.cs.redolog.op.RedoableOp.deserializeOp( RedoableOp.java:587)
at com.zimbra.cs.redolog.op.RedoableOp.deserializeOp( RedoableOp.java:540)
at com.zimbra.cs.redolog.logger.FileLogReader.getNext Op(FileLogReader.java:96)
at com.zimbra.cs.redolog.RedoPlayer.scanLog(RedoPlaye r.java:122)
at com.zimbra.cs.redolog.RedoPlayer.runCrashRecovery( RedoPlayer.java:388)
at com.zimbra.cs.redolog.RedoLogManager.start(RedoLog Manager.java:229)
at com.zimbra.cs.redolog.DefaultRedoLogProvider.start up(DefaultRedoLogProvider.java:41)
at com.zimbra.cs.util.Zimbra.startup(Zimbra.java:215)
at com.zimbra.cs.util.Zimbra.startup(Zimbra.java:123)
at com.zimbra.soap.SoapServlet.init(SoapServlet.java: 128)
at javax.servlet.GenericServlet.init(GenericServlet.j ava:241)
at org.mortbay.jetty.servlet.ServletHolder.initServle t(ServletHolder.java:440)
at org.mortbay.jetty.servlet.ServletHolder.doStart(Se rvletHolder.java:263)
at org.mortbay.component.AbstractLifeCycle.start(Abst ractLifeCycle.java:50)
at org.mortbay.jetty.servlet.ServletHandler.initializ e(ServletHandler.java:685)
at org.mortbay.jetty.servlet.Context.startContext(Con text.java:140)
at org.mortbay.jetty.webapp.WebAppContext.startContex t(WebAppContext.java:1254)
at org.mortbay.jetty.handler.ContextHandler.doStart(C ontextHandler.java:517)
at org.mortbay.jetty.webapp.WebAppContext.doStart(Web AppContext.java:471)
at org.mortbay.component.AbstractLifeCycle.start(Abst ractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerCollection.doStar t(HandlerCollection.java:152)
at org.mortbay.jetty.handler.ContextHandlerCollection .doStart(ContextHandlerCollection.java:156)
at org.mortbay.component.AbstractLifeCycle.start(Abst ractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerCollection.doStar t(HandlerCollection.java:152)
at org.mortbay.component.AbstractLifeCycle.start(Abst ractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(H andlerWrapper.java:130)
at org.mortbay.component.AbstractLifeCycle.start(Abst ractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(H andlerWrapper.java:130)
at org.mortbay.jetty.handler.DebugHandler.doStart(Deb ugHandler.java:127)
at org.mortbay.component.AbstractLifeCycle.start(Abst ractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(H andlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:224)
at org.mortbay.setuid.SetUIDServer.doStart(SetUIDServ er.java:158)
at org.mortbay.component.AbstractLifeCycle.start(Abst ractLifeCycle.java:50)
at org.mortbay.xml.XmlConfiguration.main(XmlConfigura tion.java:985)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.mortbay.start.Main.invokeMain(Main.java:194)
at org.mortbay.start.Main.start(Main.java:534)
at org.mortbay.start.Main.start(Main.java:441)
at org.mortbay.start.Main.main(Main.java:119)
Please help me....
confusing why my zimbra like this.