On Fri, Nov 1, 2013 at 9:21 AM, Wes James <comptekki at gmail.com> wrote: > Why does > removing postfix remove these others. cron and the others are dependent on > having postfix? Seems odd if they are. They are dependent on having a local SMTP server, for example cron requires one to send email containing the stderr output of (presumably failed) jobs. If the zimbra packages declare the appropriate provides, you should be able to re-install cron et al. after installing zimbra.