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3119953 - AS Java UME - MailConnectException after upgrading to 7.50 SP18 or higher - No route to host


After upgrading your AS Java system to 7.50 SP 18 or higher version, you are unable to send UME notification mails. SMTP server is not reachable. You see the following exception in defaultTrace:

com.sun.mail.util.MailConnectException: Couldn't connect to host, port: <hostname>, 587; timeout -1;
nested exception is: error 113 - No route to host (Host unreachable) (local port 23326 to address, remote port 587 to address <IP Address> (<hostname>))
at com.sun.mail.smtp.SMTPTransport.openServer(
at com.sun.mail.smtp.SMTPTransport.protocolConnect(



  • SAP NetWeaver Application Server Java 7.50 SP18 and higher versions
  • User Management Engine


SAP NetWeaver 7.5


UME, notification mails, SMTP, mail server , KBA , BC-JAS-SEC-UME , User Management Engine , Problem

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