Would someone please point out some good references on mailing lists; e.g. books. I am particularly concerned with security, especially problems, threats, solutions and work-arounds presented by and for attachments. At the same time I need to learn about the general subject of security and weaknesses. Searches (initial) through yahoo, altavista, amazon, booksonline.com (and www.lsoft.com/manuals & LSTOWN-L archives) were not promising. I do remember one of the lsoft gurus' one-word advice on attachments: "don't". However, that one word doesn't fly with users, or with managers asking about vulnerabilities. While this is an lsoft list, I am interested in the broader subject of mailing lists. For one, 1.8c, bought to replace freeware Listproc 6.0, has been put on the back burner til our systems folks have time to reinstall 1.8c or reinstallation priority rises.