I can't get RSPAMD_LEARN working (v13.3.1)

[astuteq]

I try to get RSPAMD_LEARN spam learning feature (if someone moves spam to the Junk folder) enabled.
I set RSPAMD_LEARN=1, but if I move messages to the Junk folder nothing happens.
At least as far as I see in the logs.

Is there something additional which I have to do? I use Thunderbird as client.
I also tried to enable

sieve_trace_debug = yes
sieve_trace_dir = /var/log/mail/

for debugging. This also seems not to have any effect. I checked with doveconf whether the options are set.
This seems to be ok.

What ist the right place to look at?

Thanks,
Stefan Bähring

[polarathene]

@georglauterbach handles rspamd support. If this is not covered clearly in our rspamd docs page, we'll hopefully get that improved. I think I've seen this question prop up a couple times before so you might be able to search our issues/discussions for a solution.

[georglauterbach]

I think you should see something in the logs. But you can verify your observation by logging into the WebUI and looking at the HAM and SPAM learning counter.

[astuteq]

Now I also looked at the Webinterface. There is no change on the spam / ham counters.
There is also nothing to see in the rspamd.log if i move a message to the spam folder.

[georglauterbach]

And you're moving from the inbox to the spam folder (or vice versa)?

[astuteq]

Oh no. The imap_sieve plugin was missing in the imap config. I did not expect that something could be wrong with sieve as sieve filtering worked on delivery by postfix as expected... So this was the last place where I was looking at.