This means that the user 'xyz' has started the sendmail process with the -bs option. This option will allow the user to communicate with sendmail using the SMTP protocol on standard input. Therefore, the user 'xyz' will be able to specify SMTP commands (in particular, MAIL FROM command) with any parameters he want. This could allow the user, for example, to forge sender's address (not only in the message headers, but also in the SMTP session). This possibility is usually considered undesirable, so sendmail warns administrator about use of -bs option. Alexey Fadyushin Brainbench MVP for Linux http://www.brainbench.com Peter Fleck wrote: > > Greetings, > > The following appeared in my maillog and it worries me. Can anyone > shed some light on what it means? Thanks. > > maillog:Oct 29 12:33:12 marlin sendmail[6836]: h9TIXC7Q006836: > Authentication-Warning: localhost.localdomain: xyz owned process > doing -bs > -- > Peter Fleck > Webmaster | University of Minnesota Cancer Center > Dinnaken Office Bldg. > 925 Delaware St. SE > Minneapolis, MN 55414 > 612-625-8668 | fleck004@xxxxxxx | www.cancer.umn.edu > Campus Mail: MMC 806 > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
