Dear Danny,

The SMTP binding in only for in-bound, not out-bound. Use the following mechanism to force Xeams to use a specific IP for out-bound.

• Look for server.properties file in $INSTALLDIR\config folder. If you're on Windows, make sure the name is server.properties and NOT service.properties or server.properties.txt. Create a new file if server.properties is missing.
• Enter the following line towards the end:
  
  outbound.smtp.binding.ip=5.5.5.1
• Save and restart Xeams