Re: Getting Postfix to sort spam into different folders
Hi Stan,
many thanks for your explanation!
This is pretty much exactly what I want so will check the docs for specifics on how to set it all up.
Robin
Am 03.10.2013 um 05:26 schrieb Stan Hoeppner <stan@hardwarefreak.com>:
> On 10/2/2013 10:17 AM, Robin Kipp wrote:
>> Hi all,
>> I've been running my own mail server for a while (Postfix as the MTA and Dovecot for retrieving mail via IMAP).
>> Yesterday, I added amavis-new for content filtering, and so far have implemented spam checking using spamassassin and virus filtering using clamav.
>> All this appears to be working well - if anyone has some time to spare, feel free to check the header of this message - if there are any things that could be improved, I certainly would appreciate any feedback! :-)
>> So, now that spamassassin is flagging junk mail, I really would like a way of having said junk sorted into a different folder for each user. I'm aware this can also be done on the MUA side, but on some end-user devices (such as smartphones), junkmail filtering is often not supported very unfortunately.
>> So, I was just wondering… Is there any way I could do this on the server side?
>> My main problem really is that I'm not sure where I'd best set this up - but I'm guessing I'd have to do it in Postfix, as I use the 'virtual' local delivery agent to drop incoming mail into the appropriate directories. Also, the mailboxes are stored in maildir format if that makes any difference…
>> If anyone has anything like this working or could point me in the right direction I would greatly appreciate that!
>> Many thanks :-)
>> Robin
>
> Dovecot includes the sieve language for sorting. Per user, you'd have a
> .dovecot.sieve file in the home directory, containing something like:
>
> /home/stan/.dovecot.sieve
>
> require "fileinto";
>
> if false {}
>
> elsif header :contains "X-Spam-Flag" "YES" {
> fileinto "Spam";
> stop;
> }
> ...
>
> This will move the flagged messages into the user's IMAP folder named
> "Spam".
>
> You must use Dovecot LDA or LMTP for delivery if you want to use sieve.
> The advantage of using sieve vs procmail, maildrop, etc, is that
> Dovecot LDA/LMTP index the messages during the delivery phase. If you
> use procmail/maildrop then Dovecot doesn't index messages until you open
> the mailbox, which is slower.
>
> You can also use Managesieve which allows users to create their own
> filter rules. It is also possible to have a global sieve file for all
> users, for thing such as spam sorting, and individual user defined sieve
> rules simultaneously.
>
> --
> Stan
>
>
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