diff --git a/core/dovecot/conf/dovecot.conf b/core/dovecot/conf/dovecot.conf
index 38ceb015..35280d21 100644
--- a/core/dovecot/conf/dovecot.conf
+++ b/core/dovecot/conf/dovecot.conf
@@ -180,7 +180,7 @@ plugin {
 
   # Learn from spam
   imapsieve_mailbox1_name = Junk
-  imapsieve_mailbox1_causes = COPY
+  imapsieve_mailbox1_causes = COPY APPEND
   imapsieve_mailbox1_before = file:/conf/report-spam.sieve
   imapsieve_mailbox2_name = *
   imapsieve_mailbox2_from = Junk
diff --git a/core/dovecot/conf/ham.script b/core/dovecot/conf/ham.script
index 7066d170..ebe92c55 100755
--- a/core/dovecot/conf/ham.script
+++ b/core/dovecot/conf/ham.script
@@ -6,6 +6,6 @@ then
 	exit 1
 fi
 
-tee >(rspamc -h $RSPAMD_HOST -P mailu learn_ham /dev/stdin) \
-	>(rspamc -h $RSPAMD_HOST -P mailu -f 11 fuzzy_del /dev/stdin) \
-	| rspamc -h $RSPAMD_HOST -P mailu -f 13 fuzzy_add /dev/stdin
+exec tee >(rspamc -t 3 -h $RSPAMD_HOST -P mailu learn_ham /dev/stdin||true) \
+       >(rspamc -t 3 -h $RSPAMD_HOST -P mailu -f 11 fuzzy_del /dev/stdin||true) \
+       >(rspamc -t 3 -h $RSPAMD_HOST -P mailu -f 13 fuzzy_add /dev/stdin||true) > /dev/null
diff --git a/core/dovecot/conf/spam.script b/core/dovecot/conf/spam.script
index 94d664ae..dab819d7 100755
--- a/core/dovecot/conf/spam.script
+++ b/core/dovecot/conf/spam.script
@@ -7,6 +7,6 @@ then
 fi
 
 
-tee >(rspamc -h $RSPAMD_HOST -P mailu learn_spam /dev/stdin) \
-    >(rspamc -h $RSPAMD_HOST -P mailu -f 13 fuzzy_del /dev/stdin) \
-    | rspamc -h $RSPAMD_HOST -P mailu -f 11 fuzzy_add /dev/stdin
+exec tee >(rspamc -t 3 -h $RSPAMD_HOST -P mailu learn_spam /dev/stdin||true) \
+       >(rspamc -t 3 -h $RSPAMD_HOST -P mailu -f 13 fuzzy_del /dev/stdin||true) \
+       >(rspamc -t 3 -h $RSPAMD_HOST -P mailu -f 11 fuzzy_add /dev/stdin||true) > /dev/null
diff --git a/towncrier/newsfragments/2908.bugfix b/towncrier/newsfragments/2908.bugfix
new file mode 100644
index 00000000..601969c8
--- /dev/null
+++ b/towncrier/newsfragments/2908.bugfix
@@ -0,0 +1,2 @@
+Moving emails to the Junk folder may have created zombies (rspamc)
+Ensure that the spam reporting works even if the email isn't COPYed to the mailbox