Yes the email of tha admin is working and it is sending notifications without any problems. There is no problem also in the user email. Any idea what can cause this? Original Message: Hi, <br /> <br />Seems like sender or recipient email is badly formatted. <br />Is the administrator email set in the wiki preferences ? The email you <br />use for the newly created user correct ? <br /> <br />JV. <br /> <br />On Mon, Jul 28, 2008 at 2:06 PM, Hosam Hassan wrote: <br />> Hello guys, <br />> <br />> When I try to register as a new user and the email verification option is 'Yes' I get an exception. The watch list is working fine and sending emails normally so the SMTP server connection is working, Just it doesn't work when I try to register a new user. Thats the exception I get. <br />> <br />> A problem occured while trying to service your request. Please contact the support if this happens again. <br />> <br />> Detailed information: <br />> <br />> Error number 10005 in 10: Could not login to mail server mailx1.dsmain.ds.corp port 25 error code 501 (501 5.5.4 Invalid Address <br />> ) <br />> com.xpn.xwiki.XWikiException: Error number 10005 in 10: Could not login to mail server mailx1.dsmain.ds.corp port 25 error code 501 (501 5.5.4 Invalid Address <br />> ) <br />> at com.xpn.xwiki.XWiki.sendMessage(XWiki.java:2869) <br />> at com.xpn.xwiki.XWiki.sendMessage(XWiki.java:2908) <br />> at com.xpn.xwiki.XWiki.sendValidationEmail(XWiki.java:2827) <br />> at com.xpn.xwiki.XWiki.sendValidationEmail(XWiki.java:2786) <br />> at com.xpn.xwiki.XWiki.createUser(XWiki.java:2736) <br />> at com.xpn.xwiki.web.RegisterAction.action(RegisterAction.java:41) <br />> at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:147) <br />> at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) <br />> at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) <br />> at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) <br />> at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432) <br />> at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) <br />> at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) <br />> at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) <br />> at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) <br />> at com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117) <br />> at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) <br />> at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) <br />> at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210) <br />> at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174) <br />> at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) <br />> at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) <br />> at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) <br />> at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151) <br />> at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870) <br />> at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) <br />> at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) <br />> at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) <br />> at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685) <br />> at java.lang.Thread.run(Unknown Source) <br />> <br />> <br />> Any ideas why this is happening? <br />> <br />> Cheers, <br />> <br />> Hosam <br />> <br />> _______________________________________________ <br />> users mailing list <br />> users(a)xwiki.org <br />> http://lists.xwiki.org/mailman/listinfo/users <br />> <br />> <br />_______________________________________________ <br />users mailing list <br /&gt;users(a)xwiki.org <br />http://lists.xwiki.org/mailman/listinfo/users <br /> --