How to log a Sieve match in Dovecot debug_log

[Lukas]

Hi Volker!

This is what I wanted to avoid with my question. I reported my script with only three word just to make an example but my list is quite longer than this. Let's suppose a list of 30 or 40 words... 30 or 40 rules? Possible but very unconfortable to manage.
A more compact version of the script could be this:

-- the script begins ------------
 
   require ["fileinto", "imap4flags", "editheader", "body", "vnd.dovecot.debug"];

   if anyof (

        body :text :contains [

        "crypto", "sex", "viagra"

        ])
   {
     setflag "\\Seen";
     addheader :last "X-Sieve-Filtered" "blocked words in message body";
     fileinto "INBOX.Spam";
     debug_log "Body contains blocked word: <the matching word>";
   }

-- the script ends --------------

This is simpler to maintain if you have a long list of word. And here comes my previous question: it would be great if there is a way to log the matching word in order to know what word in that list was the "culprit".


Lukas



----- Messaggio originale -----
Da: "Volker Wysk" <post at volker-wysk.de>
A: "dovecot" <dovecot at dovecot.org>
Inviato: Sabato, 30 giugno 2018 12:14:11
Oggetto: Re: How to log a Sieve match in Dovecot debug_log

Am Samstag, 30. Juni 2018, 11:28:43 CEST schrieb Lukas:
> Hi everybody!
> 
> I manage a mail server running Dovecot 2.2.21 with Pigeonhole 0.4.10. I successfully configured sieve and use it also to filter some spam messages. Here is one of the script I use to filter messages on the basis of prohibited words in message body.
> 
> As you can see, the last command writes to the log the action of this script.
> 
> 
> -- the script begins ------------
> 
>    require ["fileinto", "imap4flags", "editheader", "body", "vnd.dovecot.debug"];
> 
>    if anyof (
> 
>         body :text :contains "crypto",
>         body :text :contains "sex",
>         body :text :contains "viagra"
>         )
>    {
>      setflag "\\Seen";
>      addheader :last "X-Sieve-Filtered" "blocked words in message body";
>      fileinto "INBOX.Spam";
>      debug_log "Body contains blocked word: <the matching word>";
>    }
> 
> -- the script ends --------------
> 
> 
> MY QUESTION: is there a way to have also the result of the match in that log message? I mean, is it possible to have that "<the matching word>" substituted with the exact word that matched one of the conditions (more or less the same way it is possible using Exim's System Filter)? I googled and searched a lot Dovecot documentation but wasn't able to find a definite YES or NO to this question.

You could make a separate rule for each of the words which should be blocked...

Volker