Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!decvax!microsof!uw-beaver!cornell!vax135!ariel!houti!hogpc!houxm!hocda!spanky!burl!we13!mgweed!rjk From: rjk@mgweed.UUCP Newsgroups: net.mail,net.unix-wizards Subject: Re: Mail Security and Locking Problem Message-ID: <257@mgweed.UUCP> Date: Thu, 26-May-83 07:19:14 EDT Article-I.D.: mgweed.257 Posted: Thu May 26 07:19:14 1983 Date-Received: Sat, 28-May-83 16:25:34 EDT Lines: 34 The following secure mailing scheme works great for us: Actual transcript of what happens as user "rjk": ------------------------------------------------------- $ ls -ld /usr/mail drwxrwx--x 2 bin mail 960 May 26 09:05 /usr/mail $ ls -l /usr/mail/rjk -rw-rw---- 1 rjk mail 417 May 26 09:05 /usr/mail/rjk $ cat /usr/mail/rjk >From jfs Thu May 26 09:04:22 1983 To: rjk Subject: cu ... $ ls -l /usr/mail/adm -rw-rw---- 1 adm mail 825 Mar 22 15:30 /usr/mail/adm $ cat /usr/mail/adm cat: cannot open /usr/mail/adm $ ls -l /usr/mail /usr/mail unreadable total 2 $ grep MFMODE /usr/src/cmd/mail.c #define MFMODE 0660 /* create mode for `/usr/mail' files */ -------------------------------------------------------- No one can read anyone else's mail and the locking mechanism works as it is supposed to. Randy King we13!mgweed!rjk