The following has a little bit of information that might take some one time regarding setting up the RSS feed poster plug-in on a simple machines forum hosted at DreamHost.
RSS feed poster plug-in: got it working by doing the following:
uploading the package just like all of the other modifications. Enabling the package.
Added the XML feed and selected the proper board to post to.
Uncheck the “fake Cron job” option.
Selected “curl” from the drop-down menu