Introducing postfix_use_dovecot_lda

templates/master.cf.debian-etch.erb

@@ -94,3 +94,7 @@ amavis unix - - - - 2 smtp
         -o receive_override_options=no_unknown_recipient_checks,no_header_body_checks
         -o smtpd_bind_address=127.0.0.1
 <% end %>
+<% if postfix_use_dovecot_lda == 'yes' %>
+dovecot   unix  -       n       n       -       -       pipe
+  flags=DRhu user=vmail:vmail argv=/usr/lib/dovecot/deliver -d ${recipient}
+<% end %>