On 14.09.2017 18:59, Msd wrote: > I don't realy want to create a "normal user" whitelist or a "system > user" blacklist because the list will probably change if I install a > new software or I create a new user.
Well, that's the nature of things, given that you wrote you don't want to accept mail for all accounts. Either you maintain a list of addresses for which you are willing to accept mail (recommended), or a list of addresses for which you want reject mail. You need one or the other. One method would be to generate a whitelist by parsing your /etc/passwd, including only entries with UIDs >= 1000. A simple script can do that. > Is it possible to prevent local delivery for unix system accounts (id > below 1000) ? It is better to not accept mail for these accounts to begin with than trying to prevent local delivery after having accepted mail. -Ralph
