Implement auto-forward and auto-reply

dovecot/conf/dovecot.conf

@@ -15,6 +15,10 @@ service dict {
   }
 }
 
+dict {
+  sieve = sqlite:/etc/dovecot/pigeonhole-sieve.dict
+}
+
 ###############
 # Mailboxes
 ###############
@@ -137,7 +141,10 @@ service managesieve-login {
 
 plugin {
 	sieve_dir = ~/sieve
+  sieve_plugins = sieve_extdata
+  sieve_extensions = +vnd.dovecot.extdata
 	sieve_before = /var/lib/dovecot/before.sieve
 	sieve_default = /var/lib/dovecot/default.sieve
 	sieve_after = /var/lib/dovecot/after.sieve
+  sieve_extdata_dict_uri = proxy::sieve
 }