How can I keep the spam that does get through the network filters to a minimum?

We recommend using an e-mail program that has filtering capability. Two of the most common are Pegasus and later versions of Eudora. There are many others that do the job, too. Go to any Web site that offers downloadable programs: shareware, freeware, or commercialware. You can find the best one to suit your needs, at the price that is right for you. You can usually put in your own filtering criteria so that any mail you do not want will not get through.