Postfix: The Definitive Guide by Kyle D. Dent The following errata were *corrected* in the 6/05 reprint: Here's a key to the markup: [page-number]: serious technical mistake {page-number}: minor technical mistake : important language/formatting problem (page-number): language change or minor formatting problem (226) Third paragraph in the Installation section; "...you create groups be editing..." NOW READS: "...you create groups by editing..."