Frequently asked questions

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• /config/messageHandler/workingDir
• /config/messageHandler/statusDatabase

How to upgrade a MH installation on Linux

Since the installation of the Linux distribution is not carried out with a installer, an upgrade can be done fairly easy.

Suppose, you have installed MH under ${INSTALL_DIR}. To upgrade:

• Unpack the distro unter ${DISTRO_DIR}
• Stop the MH service.

• Remove the current version of MH with

  Code Block
  language bash theme Emacs
  rm ${INSTALL_DIR}/lib/*

  
  

• Install the new version with 

  Code Block
  language bash theme Emacs
  cp ${DISTRO_DIR}/lib/* ${INSTALL_DIR}/lib/*

  
  

• Start the MH service

MessageHandler logs an ERROR on startup

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Is MessageHandler affected by "Log4Shell" vulnerability?

Although MessageHandler uses the log4j software library, MessageHandler is not affected by the vulnerability. The reason is that MessageHandler uses an older version of log4j, which is not vulnerable.

Please note that the sedex client, with which MessageHandler work together, is also not vulnerable in versions > 5.0.