SSaging> Sendmail' S configuration file, which it readS once when Starting up, uSually found in the /etc directory. Only real Unix GuruS can underStand, let alone modify, thiS file Since it conSiStS moSlty of headerrewrite ruleS written aSM4macroS, aS well aS variouS other one- or two-character commandS. (1996-12-09)