Eric Allman Sendmail 8.8.2Eric Allman Sendmail 8.8.1Eric Allman Sendmail 8.8.3Eric Allman Sendmail 8.8Sco Openserver 5.0Sun Sunos 5.3Sun Sunos 4.1.4Hp Hp-ux 10.01Sun Solaris 2.4Hp Hp-ux 10.00Sun Solaris 2.5.1Sun Solaris 2.5Ibm Aix 4.2Sco Openserver 5.0.2Sco Internet Faststart 1.0Sun Sunos 5.5Sco Internet Faststart 1.1Bsdi Bsd Os 2.1Hp Hp-ux 10.16Ibm Aix 3.2Sun Sunos 4.1.3u1Freebsd Freebsd 2.1.6