I think it is because of cron jobs, that use to send mails to root .
Conrad Winchester wrote:
I do have one question though and I apologize if people always ask this: At the end of the install I asked whether I want to run sshd and ntpd by default - very nice BUT why am I not given the option to turn off Sendmail at this point? I NEVER use sendmail and for an OS that prides itself on being as minimal as possible I would have thought giving you the option to not run sendmail would also be there right from the start.