Re: [exim] redirecting spam

William Rundquist <war@???> wrote:
>> -----Original Message-----
>> From: exim-users-bounces@???
>> [mailto:exim-users-bounces@exim.org] On Behalf Of Odhiambo G.
>> Washington
>> Sent: Tuesday, January 18, 2005 11:59 PM
>> Subject: Re: [exim] redirecting spam
>>
>> * William Rundquist <war@???> [20050119 02:35]: wrote:
>>>
>>> I have spamassassin integrated with Exim thru
>>> the exiscan patch and its working well. Right
>>> now, I have a simple setup wherein spam is
>>> handled with a header addition and a filter
>>> which changes the subject to include a SPAM
>>> marker in the subject line. I am also including
>>> the spam level and spam report in the headers.
>>> This is being done for all email which is processed
>>> by the server.
>>>
>>> What I need to do is only process email for the
>>> local domain (there are several domains for which
>>> we are secondary MX) and also to deliver spam to
>>> a separate mailbox for each of the local users.
>>> Unlike the system mailbox, this spambox will be
>>> a file in the users home directory.
>>>
>>> I have tried a rewrite rule with no luck and so
>>> am looking for assistance from the list.
>>
>> There is no "straight" solution to that one. You have to craft it
>> yourself by searching on the Internet for some keywords only
>> available to your mind (right now).
>
> Interesting proposition. I would have thought that delivering
> spam to a separate mail folder (regardless of the location of
> that folder) would be something that a large portion of the
> community would be doing and so there would be a straightforward
> recommendation.

I think what Wash means in his inimitable way is that like most things,
there is no one way to achieve this with Exim - you have the opportunity to
craft it to suit your circumstances.

> FWIW, the solution that I have come up with after digging
> thru the docs a bit more (I'm still getting use to the exim
> configuration syntax after way too many years of smail-3) is
> working well. It relies only on a flag set by the data acl
> as a result of the scan.
>
> The redirect router looks like the following:
>
> spam_redirect:
> driver = redirect
> condition = ${if def:h_X-Spam-Flag: {1}{0}}
> domains = "your domain(s) here"
> check_local_user
> require_files = /home/$local_part
> data = /home/$local_part/Spambox
> file_transport = address_file

Looks fine to me

> The keys in this router are the use of check_local_user to
> properly setup the user and group for the delivery thru the
> file_transport and the require_files check for a home
> directory (which prevents entries in /home from being created
> for the system accounts like exim, admin, etc).
>
> YMMV, but this *seems to me* to be a reasonable strategy
> assuming that you don't ever want to reject email with a
> false positive, and lets you set the spam score level to
> a much lower value since all mail will be delivered somewhere.

Yep, looks like you've solved your problem.

Peter