Configure Outlook Express or Entourage
Bring Outlook Express (or Entourage) to the Front. Choose Schedules from the Tools menu. If you do not have a Schedules command, choose Edit Schedules from the Run Schedule submenu of the Tools menu.
In the Schedules window, double-click the Send and receive all schedule.
In the When portion of the window, be sure that the only trigger is Manually. Use the Remove Occurrence button to remove any automatic checks (if you want automatic checks, set them up in Spamfire). The window should look like this:
In the Action portion of the window, be sure that it is set to retrieve mail from each of the accounts you are filtering in Spamfire. Click the Add Action button to add accounts if necessary. The window should look like this: