Hi,
   
  I configured the CONTINUUM_HOME/conf/plexus.xml as:
   
           <resource>
            <name>mail/Session</name>
            <type>javax.mail.Session</type>
            <properties>
              <property>
                <name>mail.smtp.host</name>
                <value>xxx.xxx.com.br</value>
              </property>
              <property>
                <name>mail.smtp.port</name>
                <value>25</value>
              </property>
   
                <!--
              <property> 
                <name>mail.smtp.auth</name>
                <value>true</value>
              </property>
              <property>
                <name>mail.smtp.user</name>
                <value>your_login</value>
              </property>
              <property>
                <name>password</name>
                <value>your_password</value>
              </property>
              <property>
                <name>mail.smtp.debug</name>
                <value>true</value>
              </property>
              <property>
                <name>mail.smtp.starttls.enable</name>
                <value>true</value>
              </property>
              <property>
                <name>mail.smtp.socketFactory.class</name>
                <value>javax.net.ssl.SSLSocketFactory</value>
              </property>
              -->
            </properties>
          </resource>
          
But when I add a new user and I click in Resend Validation, I get in continuum.log 
   
  org.codehaus.plexus.mailsender.MailSenderException: Error while sending the message.
        at org.codehaus.plexus.mailsender.javamail.AbstractJavamailMailSender.send(AbstractJavamailMailSender.java:221)
        at org.codehaus.plexus.redback.xwork.mail.Mailer.sendMessage(Mailer.java:145)
        at org.codehaus.plexus.redback.xwork.mail.Mailer.sendAccountValidationEmail(Mailer.java:70)
        at org.codehaus.plexus.redback.xwork.action.RegisterAction.resendRegistrationEmail(RegisterAction.java:207)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at com.opensymphony.xwork.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:358)
        at com.opensymphony.xwork.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:218)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:192)
        at org.codehaus.plexus.redback.xwork.interceptor.SecureActionInterceptor.intercept(SecureActionInterceptor.java:114)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at org.codehaus.plexus.redback.xwork.interceptor.PolicyEnforcementInterceptor.intercept(PolicyEnforcementInterceptor.java:149)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at org.codehaus.plexus.redback.xwork.interceptor.AutoLoginInterceptor.intercept(AutoLoginInterceptor.java:156)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at org.codehaus.plexus.redback.xwork.interceptor.ForceAdminUserInterceptor.intercept(ForceAdminUserInterceptor.java:76)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at org.codehaus.plexus.redback.xwork.interceptor.EnvironmentCheckInterceptor.intercept(EnvironmentCheckInterceptor.java:122)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:175)
        at com.opensymphony.xwork.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:115)
        at com.opensymphony.xwork.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.webwork.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:174)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.webwork.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:169)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:151)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:186)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:116)
        at com.opensymphony.webwork.dispatcher.DispatcherUtils.serviceAction(DispatcherUtils.java:273)
        at com.opensymphony.webwork.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:202)
        at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
        at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
        at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
        at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
        at com.opensymphony.webwork.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:88)
        at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
        at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:471)
        at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:568)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1530)
        at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:633)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1482)
        at org.mortbay.http.HttpServer.service(HttpServer.java:909)
        at org.mortbay.http.HttpConnection.service(HttpConnection.java:816)
        at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:982)
        at org.mortbay.http.HttpConnection.handle(HttpConnection.java:833)
        at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
        at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
        at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)
Caused by: com.sun.mail.smtp.SMTPSendFailedException: 553 5.5.4 <root@localhost>... Real domain name required for sender address
   
          at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:1388)
        at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:959)
        at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:583)
        at org.codehaus.plexus.mailsender.javamail.AbstractJavamailMailSender.send(AbstractJavamailMailSender.java:214)
        ... 71 more
        
The problem is: com.sun.mail.smtp.SMTPSendFailedException: 553 5.5.4 <root@localhost>... Real domain name required for sender address
The Continuum is trying email with sender root@localhost
I tried set in C:\continuum-1.1\apps\continuum\webapp\WEB-INF\classes\META-INF\plexus\application.xml the parameters from-mailbox and from-name,
but this affect only notification.
When I use smtp with user and password work out.
Please help me!

       
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