Fix sieves

Author: semhoun

rootfs/etc/dovecot/conf.d/90-sieve.conf

@@ -213,4 +213,11 @@ plugin {
   # Enables showing byte code addresses in the trace output, rather than only
   # the source line numbers.
   #sieve_trace_addresses = no 
+
+  # Always send vacation messages with the SMTP MAIL FROM envelope address set
+  # to the recipient. This is needed for the vacation response to be DKIM
+  # signed by QMail. See
+  # <https://wiki2.dovecot.org/Pigeonhole/Sieve/Extensions/Vacation> for more
+  # information.
+  sieve_vacation_send_from_recipient = yes
 }