[Dovecot] sa learning from an imap spam folder

[mouss]

frank.kintrup at fkware.de wrote:
> This is my approach, stored in /etc/cron.hourly. It's very new, so I'm
> still testing
> it. 
>
> The goal is to learn HAM massages only if they are a day old, so that I can
> manually
> remove SPAM that slipped through. Mails tagged from Spamassassin are sorted
> automatically into the "Junk.Spam" mailbox and learned after 12 hours. I
> manually 
> move any missed SPAM into the .Junk mailbox, so I'm sure there are no
> wrongly 
> tagged messages there, 

what happens if you don't read your mail (vacation, ... etc)?

> so I can learn those messages as soon as they are
> found
> by cron.
>
>   

Consider training on errors only.

I personally use 3 folders:

Junk: tagged spam goes here
Junk/Trash: confirmed or missed spam goes here (manually). goes to 
sa-learn --spam.
Junk/Error: false positives go here (manually of course:). goes to 
sa-learn --ham



> /etc/cron.hourly/sa-learn:
>
>
>
> #!/bin/sh
>  
> umask 022
>  
> # Learn HAM messages which were roughly received between 24 and 25 hours
> ago
> find \
>   /var/vmail/fkware.de/frank.kintrup/Maildir/ \
>   -path '/var/vmail/fkware.de/frank.kintrup/Maildir/.Junk*' -prune -o \
>   -path '/var/vmail/fkware.de/frank.kintrup/Maildir/.Sent'  -prune -o \
>   -path '/var/vmail/fkware.de/frank.kintrup/Maildir/.Trash' -prune -o \
>   -path '/var/vmail/fkware.de/frank.kintrup/Maildir/.Draft' -prune -o \
>   -iname '*server.fkware.de*' -type f -mmin +1435 -mmin -1505 \
>   -execdir sa-learn --username=vmail --no-sync --ham {} \; \
>   /dev/nul 2>/dev/nul
>  
> # Learn and delete SPAM messages which were manually moved to the Junk
> folder
> find \
>   /var/vmail/fkware.de/frank.kintrup/Maildir/.Junk/ \
>   -iname '*server.fkware.de*' -type f \
>   -execdir sa-learn --username=vmail --no-sync --spam {} \; \
>   -execdir rm {} \; \
>   >/dev/nul 2>/dev/nul
>  
> # Learn and delete SPAM messages which were received more than 12 hours ago
> # and automatically put into the Junk.Spam folder
> find \
>   /var/vmail/fkware.de/frank.kintrup/Maildir/.Junk.Spam/ \
>   -iname '*server.fkware.de*' -type f -mmin +720 \
>   -execdir sa-learn --username=vmail --no-sync --spam {} \; \
>   -execdir rm {} \; \
>   >/dev/nul 2>/dev/nul
>  
> sa-learn --username=vmail --sync >/dev/nul
>  
> exit 0
>
>
>