Replying to a message from: Synametrics Support


You will have to modify the files slightly that are sitting in the OutboundMailQueue. Here are the steps:

  • Open $INSTALL_DIR\OutboundMailQueue folder
  • Open any file sitting there in Notepad
  • Search for X-SMCustomAuth .
  • The goal is to remove this header from the email that are sitting in your OutboundQueue. The quickest way is to use a utility that can do search/replace inside files and replace X-SMCustomAuth with some garbage value. For example X-SMCustomXXXAuth

The actual problem is occurring when Xeams is trying to use the Smart Host even for incoming messages.