dovecot + Procmail -> junk emails

John Stoffel john at stoffel.org
Mon Aug 2 20:57:12 EEST 2021


>>>>> "Stephane" == Stephane Magnier <steph.mag220 at netcourrier.com> writes:

Stephane> Having moved from 'mbox' to 'Maildir', I'm trying to use a
Stephane> way to move a spam email to the Junk folder

Have you looked at 'sieve' and 'pigeonhole' setup?  procmail is old
old old and completely unsupported.  

Stephane> I declared the junk folder as;

Stephane>     namespace inbox {
Stephane>     type = private
Stephane>     disabled = no
Stephane>     ignore_on_failure = no
Stephane>       list = yes
Stephane>         subscriptions = yes
Stephane>     #hidden = no
Stephane>     #inbox = yes
Stephane>     #prefix = INBOX/
   
Stephane>       mailbox "Drafts" {
Stephane>           auto = subscribe
Stephane>         special_use = \Drafts
Stephane>       }
Stephane>       mailbox "Junk" {
Stephane>           auto = subscribe
Stephane>         autoexpunge = 12 weeks
Stephane>         special_use = \Junk
Stephane>       }
   
Stephane>       mailbox "Trash" {
Stephane>           auto = no
Stephane>         autoexpunge = 12 weeks
Stephane>         special_use = \Trash
Stephane>       }
   
Stephane>       mailbox "Sent" {
Stephane>           auto = subscribe
Stephane>         special_use = \Sent
Stephane>       }

Stephane>     and spamassassin, very basic
   
Stephane>             loadplugin Mail::SpamAssassin::Conf
           
Stephane>             required_hits 5
Stephane>             required_score 5
Stephane>             rewrite_header subject [** SPAM ** ]
Stephane>             add_header all Status _YESNO_, score=_SCORE_ required=_REQD_ tests=_TESTS_ autolearn=
Stephane>             _AUTOLEARN_ version=_VERSION_
Stephane>             spf_timeout 60
           
Stephane>             rewrite_header to [Email could be SPAM ]
Stephane>             fold_headers 0
Stephane>             #defang_mime 0
Stephane>             report_safe 0

Stephane>     and Procmail.. basic and I used what I found  on the webpage : 
Stephane>     https://wiki.dovecot.org/procmail
   
This is probably old and should be removed or replaced.  I have
/etc/dovecot/conf.d/90-sieve.conf which looks like this:

plugin {
  sieve = ~/.dovecot.sieve
  sieve_dir = ~/sieve
  sieve_global_dir =
  sieve_before = /var/lib/dovecot/sieve/before.d
  sieve_after = /etc/dovecot/sieve-after
  sieve_extensions = +spamtest +spamtestplus
  sieve_spamtest_status_type = score
  sieve_spamtest_status_header = X-Spamd-Result: default: [[:alnum:]]+ [(-?[[:digit:]]+\.[[:digit:]]+) / -?[[:digit:]]+\.[[:digit:]]+\]
  sieve_spamtest_max_header    = X-Spamd-Result: default: [[:alnum:]]+ [-?[[:digit:]]+\.[[:digit:]]+ / (-?[[:digit:]]+\.[[:digit:]]+)\]
}

And I have spamassissin scoring my mails, this script to move them
into 'Junk' as needed:

   # more /etc/dovecot/sieve-after/spam-to-folder.sieve
   require ["fileinto","mailbox"];

   if header :contains "X-Spam-Flag" "YES" {
     fileinto :create "Junk";
     stop;
   }
    

Cheers,
John


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