Submitting spam mail for training SA

[Jari Fredriksson]

13.12.2012 10:35, Nikolaos Milas kirjoitti:
> Hello,
>
> We have a Postfix 2.9.4 with Amavisd-new 2.8.0/ClamAV/Spamassassin on
> Centos 6.3 (x86_64) used as an incoming mail filtering gateway which
> relays clean (only) mail to an internal final destination mail server
> (Postfix/Dovecot).
>
> We are not using Maia or other such systems supporting per user
> filtering/spam rule settings. (We want to keep the setup as simple as
> possible and controllable by the admins.)
>
> I would like to setup a spam mailbox (like: spam at example.com) where
> users can submit what they deem as spam, and which can be used to
> train SpamAssassin. The idea is to receive reported spam as attachment
> (one per mail), so we can process it later, e.g. by saving spam mail
> files in a directory and running:
>
>    sa-learn --spam /path/to/spam/folder
>
> Questions:
>
>  * Do regular eml files (of spam mail messages) qualify for such use
>    (i.e. does sa-learn understand them properly)?
>  * What happens with spam messages forwarded from Outlook clients which
>    will forward as msg and not as eml? Do we need a msg-to-eml
>    converter script to process these files?
>
> Has anyone here set up something like that and could suggest/provide a
> script or similar, which would accomplish this task (I don't want to
> re-discover the wheel)?
>
> Any advice will be appreciated.
>
> Thanks in advance,
> Nick
>
>

The best solution might be an IMAP based mail server in the final server
for the Users. Each and every User should have a special folder for the
purpose. Then they could simply drag the Spam-to-train and possibly
Ham-to-train to the folders.

Separate Cron job then could process the samples and train the bayes.

--jarif

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