Hi

Just upgraded from 5.0.18 -> 6.0.3 and now when sending email the web client I get an error about the server acting slow and eventually fails. The following shows up in /opt/zimbra/log/mailbox.log

com.zimbra.common.service.ServiceException: system failure: Unable to send message
ExceptionId:btpool0-49:https://10.12.5.10:443/service/soap/...b9a7104339c925
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java: 247)
at com.zimbra.cs.mailbox.MailSender.sendMimeMessage(M ailSender.java:453)
at com.zimbra.cs.mailbox.MailSender.sendMimeMessage(M ailSender.java:280)
at com.zimbra.cs.service.mail.SendMsg.doSendMessage(S endMsg.java:187)
at com.zimbra.cs.service.mail.SendMsg.handle(SendMsg. java:150)
at com.zimbra.soap.SoapEngine.dispatchRequest(SoapEng ine.java:418)
at com.zimbra.soap.SoapEngine.dispatch(SoapEngine.jav a:272)
at com.zimbra.soap.SoapEngine.dispatch(SoapEngine.jav a:156)
at com.zimbra.soap.SoapServlet.doWork(SoapServlet.jav a:291)
at com.zimbra.soap.SoapServlet.doPost(SoapServlet.jav a:212)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:727)
at com.zimbra.cs.servlet.ZimbraServlet.service(Zimbra Servlet.java:181)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(Ser vletHolder.java:502)
at org.mortbay.jetty.servlet.ServletHandler$CachedCha in.doFilter(ServletHandler.java:1157)
at org.mortbay.servlet.UserAgentFilter.doFilter(UserA gentFilter.java:81)
at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter .java:148)
at org.mortbay.jetty.servlet.ServletHandler$CachedCha in.doFilter(ServletHandler.java:1148)
at org.mortbay.jetty.servlet.ServletHandler.handle(Se rvletHandler.java:379)
at org.mortbay.jetty.security.SecurityHandler.handle( SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(Se ssionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle(Co ntextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebA ppContext.java:418)
at org.mortbay.jetty.handler.ContextHandlerCollection .handle(ContextHandlerCollection.java:230)
at org.mortbay.jetty.handler.HandlerCollection.handle (HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152)
at org.mortbay.jetty.handler.rewrite.RewriteHandler.h andle(RewriteHandler.java:230)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152)
at org.mortbay.jetty.handler.DebugHandler.handle(Debu gHandler.java:77)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:324)
at org.mortbay.jetty.HttpConnection.handleRequest(Htt pConnection.java:525)
at org.mortbay.jetty.HttpConnection$RequestHandler.co ntent(HttpConnection.java:882)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser. java:755)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpPa rser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnec tion.java:387)
at org.mortbay.io.nio.SelectChannelEndPoint.run(Selec tChannelEndPoint.java:409)
at org.mortbay.thread.BoundedThreadPool$PoolThread.ru n(BoundedThreadPool.java:451)
Caused by: com.zimbra.cs.mailbox.MailSender$SafeMessagingExce ption: Exception reading response; chained exception is:
java.net.SocketTimeoutException: Read timed out
at com.sun.mail.smtp.SMTPTransport.readServerResponse (SMTPTransport.java:1764)
at com.sun.mail.smtp.SMTPTransport.close(SMTPTranspor t.java:823)
at javax.mail.Transport.send0(Transport.java:193)
at javax.mail.Transport.send(Transport.java:142)
at com.zimbra.cs.mailbox.MailSender.sendMessage(MailS ender.java:612)
at com.zimbra.cs.mailbox.MailSender.sendMimeMessage(M ailSender.java:376)
... 36 more
2009-11-28 16:50:05,852 INFO [btpool0-49:https://127.0.0.1:7071/service /admin/soap/AuthRequest] [ip=127.0.0.1;] soap - AuthRequest
2009-11-28 16:50:06,019 INFO [btpool0-49:https://127.0.0.1:7071/service/admin...erversRequest] [name=zimbra;ip=127.0.0.1;] soap - GetAllServersRequest

I've disabled the firewall, tried fixperms, server is 99% idle etc.

Thanks