tage@sfd.uit.no (Tage Stabell-Kul) (09/20/89)
I had a problem with the mail. Sendmail(8) reported "unknown mailer error 255". No mail were delivered. I have found that the mail-delivery program binmail(1) (/bin/mail) requires that /dev/kmem have mode 444 (or more) Two questions : 0) What info does /bin/mail read from kmem ? 1) /bin/mail is setuid-root. Do the program do a setuid , if so, to whom ? |Tage Stabell-Kuloe |Fast: tage@sfd.uit.no | |Department of Computer Science, |Official: postmaster@sfd.uit.no | |University of Tromsoe, Postboks 953,|Phone: +47 8344117 | |N-9000 TROMSOE, NORWAY. |#include <disclaimer.std> |
avolio@decuac.dec.com (Frederick M. Avolio) (09/21/89)
In article <2032@ifi.uio.no>, tage@sfd.uit.no (Tage Stabell-Kul) writes: > 0) What info does /bin/mail read from kmem ? I'm pretty sure it determines the load average and then fom that makes some guesses.. I mean calculations as to how long to wait on a lock file, etc. > 1) /bin/mail is setuid-root. Do the program do a setuid , if so, to > whom ? Well, it writes to the end of your mailbox. It is root to insure that it can do that. Fred