Thanks, Ansgar Wiechers! I created a permitted users list and I mapped this list in $smtpd_restriction_classes. In the $check_recipient_access I set the hash for absolute path to this list.
But I'll try the way you suggested to choose the best. :) On Sat, May 4, 2013 at 7:31 PM, Ansgar Wiechers <li...@planetcobalt.net>wrote: > 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 > -- Regards, || -------------------------------------------- || Sergio Henrique Bento de Mira || _ BSc of Computer Science (in progress) || °v° Federal University Of Lavras (UFLA) || /(_)\ || ^ ^ sergiohbm...@computacao.ufla.br || http://graduacao.dcc.ufla.br/~shbm95 || --------------------------------------------- || Linux User #497558 || "Use Linux and be free."
