On 13 Jun 2018, at 20.26, @lbutlr <kremels@kreme.com> wrote:

On 12 Jun 2018, at 01:23, Alex JOST <jost+lists@dimejo.at> wrote:

Am 12.06.2018 um 01:01 schrieb @lbutlr:

I created a sieve_default to move any spam-tagged messages into the Junk mailbox automatically, but it doesn’t appear to be working (though the other imapsieve_mailbox… scripts are working).
From doveconf -n
plugin {
 imapsieve_mailbox1_before = file:/usr/lib/dovecot/sieve/report-spam.sieve
 imapsieve_mailbox1_causes = COPY
 imapsieve_mailbox1_name = Junk
 imapsieve_mailbox2_before = file:/usr/lib/dovecot/sieve/report-ham.sieve
 imapsieve_mailbox2_causes = COPY
 imapsieve_mailbox2_from = Junk
 imapsieve_mailbox2_name = *
 imapsieve_mailbox3_before = file:/usr/lib/dovecot/sieve/mark-read.sieve
 imapsieve_mailbox3_causes = COPY
 imapsieve_mailbox3_name = Archive
 sieve = file:~/.sieve;active=~/.active_sieve
 sieve_default = /usr/lib/dovecot/sieve/default.sieve
 sieve_default_name = spamassassin
 sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.environment
 sieve_pipe_bin_dir = /usr/lib/dovecot/sieve
 sieve_plugins = sieve_imapsieve sieve_extprograms
}
And
# cat /usr/lib/dovecot/sieve/default.sieve
if header :contains "X-spam-flag" "YES" {
    fileinto "Junk";
}
There are no user sieve files
# find /home -name "*sieve*" -type f
#
The x-spam-flag header in the message in my mailbox is definitely there and definitely set to yes.

I think you need to enable the 'fileinto' extension via 'require'. And did you pre-compile the script?

I added 

require "fileinto”;

To default.sieve

I did not pre-compile the script, but according to the docs that should not prevent it from working.

Spam, messages are still not being filed in to Junk, however.