Hi,
I think this error doesn't related to Zextras product but I would like to post it here for some clue. 
I have an internal server error on Zimbra 8.5, after upgrading from 8.0.3 multi server.
From /opt/zimbra/log/zmmailboxd.out :
Caused by:
com.zimbra.common.soap.SoapFaultException: no valid authtoken present|ExceptionId:qtp509886383-27905: http://127.0.0.1:80/service/soap/GetAvailableLocalesRequest:1410976372381:5310f4b94bf366b8:SoapEngine265|Code:service.AUTH_REQUIRED
at com.zimbra.common.soap.Soap12Protocol.soapFault(Soap12Protocol.java:90)
at com.zimbra.common.soap.SoapTransport.extractBodyElement(SoapTransport.java:355)
at com.zimbra.common.soap.SoapTransport.parseSoapResponse(SoapTransport.java:328)
at com.zimbra.common.soap.SoapHttpTransport.invoke(SoapHttpTransport.java:257)
at com.zimbra.common.soap.SoapHttpTransport.invoke(SoapHttpTransport.java:169)
at com.zimbra.common.soap.SoapTransport.invoke(SoapTransport.java:408)
at com.zimbra.common.soap.SoapTransport.invokeWithoutSession(SoapTransport.java:394)
at com.zimbra.cs.taglib.tag.i18n.GetValidLocaleTag.doTag(GetValidLocaleTag.java:67)
at org.apache.jsp.public_.launchZCS_jsp._jspx_meth_zm_getValidLocale_0(org.apache.jsp.public_.launchZCS_jsp:905)
at org.apache.jsp.public_.launchZCS_jsp._jspService(org.apache.jsp.public_.launchZCS_jsp:331)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:411)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:473)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:377)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at com.zimbra.webClient.servlet.JspServlet.service(JspServlet.java:58)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:738)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:551)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:586)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1111)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:478)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1045)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:261)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:101)
at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:792)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_otherwise_7(org.apache.jsp.public_.login_jsp:2709)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_choose_9(org.apache.jsp.public_.login_jsp:2455)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_when_13(org.apache.jsp.public_.login_jsp:2427)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_choose_8(org.apache.jsp.public_.login_jsp:2192)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_otherwise_6(org.apache.jsp.public_.login_jsp:2007)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_choose_5(org.apache.jsp.public_.login_jsp:1708)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_when_8(org.apache.jsp.public_.login_jsp:1641)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_choose_4(org.apache.jsp.public_.login_jsp:1607)
at org.apache.jsp.public_.login_jsp._jspService(org.apache.jsp.public_.login_jsp:449)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:411)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:473)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:377)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at com.zimbra.webClient.servlet.JspServlet.service(JspServlet.java:58)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:738)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:551)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:586)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1111)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:478)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1045)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:261)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:101)
at org.eclipse.jetty.servlet.DefaultServlet.doGet(DefaultServlet.java:552)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:738)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1651)
at com.zimbra.cs.servlet.RequestStringFilter.doFilter(RequestStringFilter.java:54)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1622)
at com.zimbra.webClient.filters.ForwardFilter.doFilter(ForwardFilter.java:88)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1622)
at com.zimbra.cs.servlet.SetHeaderFilter.doFilter(SetHeaderFilter.java:59)
at com.zimbra.webClient.filters.SetHeaderFilter.doFilter(SetHeaderFilter.java:248)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1622)
at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:83)
at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:351)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1622)
at com.zimbra.cs.servlet.ContextPathBasedThreadPoolBalancerFilter.doFilter(ContextPathBasedThreadPoolBalancerFilter.java:124)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1622)
at com.zimbra.cs.servlet.ZimbraQoSFilter.doFilter(ZimbraQoSFilter.java:116)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1622)
at org.eclipse.jetty.servlets.DoSFilter.doFilterChain(DoSFilter.java:457)
at org.eclipse.jetty.servlets.DoSFilter.doFilter(DoSFilter.java:326)
at org.eclipse.jetty.servlets.DoSFilter.doFilter(DoSFilter.java:299)
After click on go back for several times, I can logged in successfully. According to upgrading history, I've encounter LDAP replica error and then replace it with a brand new LDAP replica. The above error log came from mailbox server connected to a brand new LDAP server replica.
Any help would be greatly appreciated.
Caused by:
com.zimbra.common.soap.SoapFaultException: no valid authtoken present|ExceptionId:qtp509886383-27905: http://127.0.0.1:80/service/soap/GetAvailableLocalesRequest:1410976372381:5310f4b94bf366b8:SoapEngine265|Code:service.AUTH_REQUIRED
at com.zimbra.common.soap.Soap12Protocol.soapFault(Soap12Protocol.java:90)
at com.zimbra.common.soap.SoapTransport.extractBodyElement(SoapTransport.java:355)
at com.zimbra.common.soap.SoapTransport.parseSoapResponse(SoapTransport.java:328)
at com.zimbra.common.soap.SoapHttpTransport.invoke(SoapHttpTransport.java:257)
at com.zimbra.common.soap.SoapHttpTransport.invoke(SoapHttpTransport.java:169)
at com.zimbra.common.soap.SoapTransport.invoke(SoapTransport.java:408)
at com.zimbra.common.soap.SoapTransport.invokeWithoutSession(SoapTransport.java:394)
at com.zimbra.cs.taglib.tag.i18n.GetValidLocaleTag.doTag(GetValidLocaleTag.java:67)
at org.apache.jsp.public_.launchZCS_jsp._jspx_meth_zm_getValidLocale_0(org.apache.jsp.public_.launchZCS_jsp:905)
at org.apache.jsp.public_.launchZCS_jsp._jspService(org.apache.jsp.public_.launchZCS_jsp:331)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:411)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:473)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:377)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at com.zimbra.webClient.servlet.JspServlet.service(JspServlet.java:58)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:738)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:551)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:586)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1111)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:478)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1045)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:261)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:101)
at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:792)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_otherwise_7(org.apache.jsp.public_.login_jsp:2709)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_choose_9(org.apache.jsp.public_.login_jsp:2455)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_when_13(org.apache.jsp.public_.login_jsp:2427)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_choose_8(org.apache.jsp.public_.login_jsp:2192)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_otherwise_6(org.apache.jsp.public_.login_jsp:2007)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_choose_5(org.apache.jsp.public_.login_jsp:1708)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_when_8(org.apache.jsp.public_.login_jsp:1641)
at org.apache.jsp.public_.login_jsp._jspx_meth_c_choose_4(org.apache.jsp.public_.login_jsp:1607)
at org.apache.jsp.public_.login_jsp._jspService(org.apache.jsp.public_.login_jsp:449)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:411)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:473)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:377)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at com.zimbra.webClient.servlet.JspServlet.service(JspServlet.java:58)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:738)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:551)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:586)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1111)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:478)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1045)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:261)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:101)
at org.eclipse.jetty.servlet.DefaultServlet.doGet(DefaultServlet.java:552)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:738)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1651)
at com.zimbra.cs.servlet.RequestStringFilter.doFilter(RequestStringFilter.java:54)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1622)
at com.zimbra.webClient.filters.ForwardFilter.doFilter(ForwardFilter.java:88)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1622)
at com.zimbra.cs.servlet.SetHeaderFilter.doFilter(SetHeaderFilter.java:59)
at com.zimbra.webClient.filters.SetHeaderFilter.doFilter(SetHeaderFilter.java:248)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1622)
at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:83)
at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:351)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1622)
at com.zimbra.cs.servlet.ContextPathBasedThreadPoolBalancerFilter.doFilter(ContextPathBasedThreadPoolBalancerFilter.java:124)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1622)
at com.zimbra.cs.servlet.ZimbraQoSFilter.doFilter(ZimbraQoSFilter.java:116)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1622)
at org.eclipse.jetty.servlets.DoSFilter.doFilterChain(DoSFilter.java:457)
at org.eclipse.jetty.servlets.DoSFilter.doFilter(DoSFilter.java:326)
at org.eclipse.jetty.servlets.DoSFilter.doFilter(DoSFilter.java:299)
After click on go back for several times, I can logged in successfully. According to upgrading history, I've encounter LDAP replica error and then replace it with a brand new LDAP replica. The above error log came from mailbox server connected to a brand new LDAP server replica.
Any help would be greatly appreciated.