PHPlist Integration with Drupal

Hi,

I have both PHPlist and two Drupal sites up and running quite well. However, my PHPlist activities are listed under a domain name that is different from my two other domains. I have added the massmailer module to Drupal, but am not sure how to do the integration. Should I move PHPlist to each server where my sites are located or is there a better way of doing this? (I've searched the forums here and on Drupal, but haven't found a complete solution)