Thanks for the kind response Benny :)

I'd like to check a few details here and there in order to tell what
exactly my plan was. Maybe my first mail was a little bit confusing.

>> I'd like to train DSPAM with the results from SpamAssassin. Incoming
>> mails first are checked by SpamAssassin and then delivered to DSPAM.
>
> you need to understand why this might be a good ideer in the first
> place, its important to not train ALL but learn incomming ALL mails is
> not training, so you dont end up with a huge database digest to resolve
> problems from later, again it keeps digest minimal, and speeds maximal
>
> my mailserver have only 1238M mem, and i consider it nice its still
> handle both spamassassin and dspam here without any problem

I don't really want to learn from ALL messages. But when SpamAssassin
is like: "Oh well here's a spam message!" it would help if DSPAM would
notice that too. When the SpamAssassin result is "not spam" then DSPAM
can handle the message as any other and do its spam detection. My goal
is to let DSPAM know that mails tagged as spam by SpamAssassin are
definitely spam and if DSPAM calculates that it is not spam -> that's
an error.

>> When SpamAssassin marked a mail as spam is there any way to tell
>> DSPAM
>> that the mail is definitely spam and to learn from that?
>
> nope, this will be failure, dspam is not another spamassassin engine,
> so you have to tell dspam what is spam, and let it know what is not
> considered as spam by you is ham
>
> if for some reason one gets an spam mail it must be sent again to dspam
> with the dspam signature that shows exacly what mail is spam
>
> when dspam got this signature, then it changes scores for all digest
> that was learned in the original mail on incomming from internet

I don't want to be DSPAM as a SpamAssassin engine. But it would be
nice if it could learn from what SpamAssassin detects.
I'm using Dovecot with Antispam plugin to watch the folders "SPAM" and
"INBOX". When DSPAM claims that a spam message is not spam users can
move the message from their INBOX into the SPAM folder an DSPAM gets
the feedback like: dspam --source=error --signature=xyz --class=spam
Sieve scripts are providing that DSPAMs spam-tagged messages are going
directly into the SPAM folder. Again if a user is moving that mail to
the INBOX, DSPAM learns from that.

So my first thought was; hey, if SpamAssassin got a spam message and
DSPAM says it's not spam, a Sieve script will automatically insert the
message (because of the SpamAssassin spam-tag) into the SPAM folder.
So now the Dovecot Antispam plugin will tell DSPAM whether or not this
was an error. Unfortunately the message have to be in the INBOX once
in order to let the Dovecot Antispam plugin execute the DSPAM learning
so this won't work. Sieve is directly putting it into the SPAM folder
what the Dovecot Antispam plugin ignores.

Does anyone have an idea how I can realize my plan or is that even possible?

Kind regards,

Hanno

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