no more discover on pyzor + taking care of /etc/aliases

exim4/exim4.conf

@@ -303,7 +303,6 @@ maildrop:
   no_verify
   no_expn
 
-
 local_user:
   debug_print = "R: local_user for $local_part@$domain"
   driver = accept
@@ -313,6 +312,17 @@ local_user:
   transport = LOCAL_DELIVERY
   cannot_route_message = Unknown user
 
+system_aliases:
+  debug_print = "R: system_aliases for $local_part@$domain"
+  driver = redirect
+  domains = +local_domains
+  allow_fail
+  allow_defer
+  data = ${lookup{$local_part}lsearch{/etc/aliases}}
+  file_transport = address_file
+  user = mail
+  group = mail
+
 mail4root:
   debug_print = "R: mail4root for $local_part@$domain"
   driver = redirect

mailserver.sh

@@ -33,7 +33,6 @@ install_exim() {
 
 install_spamassassin() {
     aptitude -y install exim4-daemon-heavy sa-exim spamassassin pyzor razor
-    sudo -u debian-spamd pyzor discover
     razor-admin -home=/etc/razor -discover
     cp -fv spamd/sa-learn /etc/cron.daily/sa-learn
     cp -fv spamd/spamassassin /etc/default/spamassassin