Don't skip admin and simplify system account filter

zmldapsync/zmldapsync.pl

@@ -266,11 +266,7 @@ DOMAIN: foreach my $domain ( keys $conf->{domains} ) {
   # Search for Zimbra users, but exclude known system accounts
   my $zim_user_search = $zim_ldap->ldap->search(
     base   => 'ou=people,' . $domain_entry->{dn},
-    filter => '(&(objectClass=zimbraAccount)(!(|' .
-                '(mail=' . $zim_ldap->global->get_value('zimbraSpamIsSpamAccount') . ')' .
-                '(mail=' . $zim_ldap->global->get_value('zimbraSpamIsNotSpamAccount') . ')' .
-                '(mail=' . $zim_ldap->global->get_value('zimbraAmavisQuarantineAccount') . ')' .
-                '(uid=galsync*)(uid=admin))))',
+    filter => '(&(objectClass=zimbraAccount)(!(zimbraIsSystemAccount=TRUE)))';
     attrs => [
       ( map { $conf->{domains}->{$domain}->{users}->{attr_map}->{$_} }
 	       keys $conf->{domains}->{$domain}->{users}->{attr_map} ),
@@ -314,11 +310,6 @@ DOMAIN: foreach my $domain ( keys $conf->{domains} ) {
   # or which exist in both but need to be updated
   foreach my $user ( keys $ext_users ) {
     my $attrs = '';
-    # Ignore admin
-    if ( $user eq 'admin' ) {
-      log_verbose( "Skiping admin user");
-      next;
-    }
     if ( defined $zim_users->{$user} ) {
 
       # User exists in Zimbra, lets check its attribute are up to date