On 2013-05-03 Sergio Mira wrote: > I started a mail server where I manipulate incoming messages through a > script. > This is 100% working. > > But my "backend" (postfix configuration) is very basic. > > I am now implementing basic security, trying to understand how postfix > works and everything. > > First of all, I am trying to reject messages to users that I have > created, not to root/apache/mysql or something only for the system. > > I tried to configure aliases. It works, but does not reject system > users. > > Then I tried to configure access file, rejecting messages to > root/apache/mysql. It worked well, but I am not sure about this is the > better way. Even because I dont know if add users to a "unauthorized > users" is better than add "authorized users". > > Is there a way to create a list with authorized users to receive > emails and all the others -- in the /etc/passwd -- dont?
You're looking for $local_recipient_maps. The default value of that parameter includes not only the alias maps, but also the passwd file (proxy:unix:passwd.byname). Add the following line to your main.cf: local_recipient_maps = $alias_maps and include a mapping for all valid (local) recipients in $alias_maps: userA: userA userB: userB ... Regards Ansgar Wiechers -- "Abstractions save us time working, but they don't save us time learning." --Joel Spolsky
