spam folder and POP users

[Gedalya]

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?

How do you even define a "pop user" - it's not an easy thing to 
determine. Someone who hasn't logged in via IMAP in x days? Perhaps 
implement a lastlogin_imap field?
You really should just have a flag in your database.
Otherwise, just purge from the spam folder messages older than X days 
(preferably after notifying the users, of course).
Another (rather annoying) feature some people have is to have a "spam 
report" delivered to Inbox daily, listing messages delivered to Spam in 
the past 24 hours, you can script that around doveadm fetch.