To Create MTA-Wide Filters

1. Write the filter using Sieve

2. Store the filter in the following file:

   msg-svr-base/config/imta.filter

   This filter file must be world readable. It is used automatically, if it exists.

3. Recompile the configuration and restart the Dispatcher

   When using a compiled configuration, the MTA-wide filter file is incorporated into the compiled configuration.