diff --git a/setup/mail-users.sh b/setup/mail-users.sh
index 68090aab..026977a4 100755
--- a/setup/mail-users.sh
+++ b/setup/mail-users.sh
@@ -92,8 +92,9 @@ pass_attrs = maildrop=user
 user_filter = (&(objectClass=mailUser)(|(mail=%u)(maildrop=%u)))
 user_attrs = maildrop=user, \
              mailboxQuota=quota_rule=*:bytes=%\$, \
-             =quota_rule2=Drafts:ignore, \
-             =quota_rule3=Sent:ignore
+             =quota_rule2=Trash:storage=+100M, \
+             =quota_rule3=Drafts:ignore, \
+             =quota_rule4=Sent:ignore
 
 # Account iteration for various dovecot tools (doveadm)
 iterate_filter = (objectClass=mailUser)