Found It - Re: spam folder and POP users

[Gedalya]

On 11/20/2014 05:51 PM, Robert Moskowitz wrote:
>
> On 11/20/2014 05:29 PM, Robert Moskowitz wrote:
>> I am new to actually running dovecot.  I actually still use POP as I 
>> have for YEARS and thunderbird does not make it easy to convert to 
>> IMAP...
>>
>>
>> My server is moving all tagged spam into the IMAP spam folder. Very 
>> nice for the IMAP users, but not for the POP users.  Of course the 
>> server don't know, and the mysql database for users does not have any 
>> flags for this.  Don't want my server to fill up with spam from POP 
>> users that don't know to check via IMAP.
>>
>> I am using roundcubemail for the webmail IMAP client.  Is there any 
>> way for POP users to indicate that they do not want spam so nicely 
>> auto moved to the IMAP spam folder?
>>
> Obviously I picked this up and did not think through the results. 
> Seemed good at the time...
>
> mkdir /home/sieve
> cat <<EOF>/home/sieve/globalfilter.sieve || exit 1
> require "fileinto";
>   if exists "X-Spam-Flag" {
>           if header :contains "X-Spam-Flag" "NO" {
>           } else {
>           fileinto "Spam";
>           stop;
>       }
>   }
>   if header :contains "subject" ["***SPAM***"] {
>     fileinto "Spam";
>     stop;
>   }
> EOF
>
> chown -R vmail:mail /home/sieve
>
> ============================================
>
> So one option is just to disable this.  Another is to work out how 
> each user can do this if they want...

You're already using roundcube, so just enable managesieve and the 
roundcube managesieve plugin, and let every user configure for 
themselves how to react to the X-Spam-Flag header.
You can drop in a few sieve scripts as suggestions and they can enable 
the one they like, or none, if they prefer to use their local mail 
client for sorting this out.