Re: Quarantine Management

2010-04-12 Thread Lucio Chiappetti

On Sat, 10 Apr 2010, Dennis B. Hopp wrote:


What are people using for quarantine management with spamassassin?


We use an homegrown arrangement. I've forgotten the details since it's 
running without problems since ages, but in the nutshell we have this:


 - spam is quarantined system-wide (not by user) in a daily folder
   (actually two, one on each MX)

 - a crontab rotates the quarantine folder. We keep one week of old
   folders.

 - the same crontab sends a report to each user which has received some
   spam. A complex awk arrangement which also expand mail aliases so it
   signals also spam sent to internal mailing lists.

   The list is essentially in a form of lists of from/to/subject.
   So each user receives 2 to 2n reports (2 one per MX, 2n if there
   was also spam for n-1 mailing lists he is member of).

   The user can look at the report and ask for occasional false positives
   to the sys adm. We get, I guess, only a few of them per month for all
   our users. See note (*)

 - the same crontab prepares material for statistics (run later by another
   crontab of mine)

 - another crontab (on both MX), using the result of the previous one
   stored on a shared disk, runs sa-learn, so that both servers learn
   the same spam.

   The same crontab also learns additional spam stored by willing users,
   and exceptionally some ham (false positives retrieved from quarantine
   by the sys adm)

(*) I tend to trust what spamassassin does, and not look at the reports.
Instead I have some personal procmail script which take all the
reports sent to me in one day, and makes a super-summary ... if
there is a message repeated with the same subject for instance it
is definitely spam, so the super-summary just says "n messages".
If it is alone, it is listed.

I do keep the reports in a folder for a week, and I have also
additional procmail-based personal spam filtering.

--

Lucio Chiappetti - INAF/IASF - via Bassini 15 - I-20133 Milano (Italy)

Citizens entrusted of public functions have the duty to accomplish them
with discipline and honour
  [Art. 54 Constitution of the Italian Republic]

For more info : http://www.iasf-milano.inaf.it/~lucio/personal.html



Re: Quarantine Management

2010-04-10 Thread David Morton
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On 4/10/10 4:24 PM, Dennis B. Hopp wrote:

> Yes exactly what I'm referring to.  Wishlist would be:
> 
> User controllable (i.e users can release spam messages back into their
> mailbox)
> Whitelist/blacklist management
> Domain configurations
> 
> maia mailguard has pretty much all of that but hasn't been updated in a
> while, just looking for other possibilities.

Mainly because it just works for most of us... :)  We are pretty close
to having a new release ready (I know it's been that way for quite a
while)  and the 1.0 branch is an improved interface, and yet still just
an incremental change so it should be very stable.


- -- 
David Morton 

Morton Software & Design  http://www.dgrmm.net - Ruby on Rails
 PHP Applications
Maia Mailguard http://www.maiamailguard.com- Spam management
 for mail servers
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Re: Quarantine Management

2010-04-10 Thread Dennis B. Hopp

Quoting Alex :


Hi,

Just wondering what other tools are out there that people like.

I use postfix as my MTA right now, but am not completely opposed to using
something else if necessary to use a specific quarantine system.


Amavisd-new works well with postfix


maia mailguard using amavisd-new but an old version.



I think he's probably referring to something that would help him
manage the quarantine itself, such as to query it for FNs, provide
some type of reporting, forward FPs back to the proper recipient,
manage expiry, expunging, and scoring, etc?


Yes exactly what I'm referring to.  Wishlist would be:

User controllable (i.e users can release spam messages back into their  
mailbox)

Whitelist/blacklist management
Domain configurations

maia mailguard has pretty much all of that but hasn't been updated in  
a while, just looking for other possibilities.


Do people just flag the message as spam (maybe in the header) and then  
let users filter to a spam folder?  We are using this as a front end  
to exchange so I guess we could just flag it and then have exchange  
deliver it to the users "Junk E-mail" folder, but then bayes can't  
learn from its mistakes as easily.


--Dennis


Re: Quarantine Management

2010-04-10 Thread Alex
Hi,
>> Just wondering what other tools are out there that people like.
>>
>> I use postfix as my MTA right now, but am not completely opposed to using
>> something else if necessary to use a specific quarantine system.
>
> Amavisd-new works well with postfix.

I think he's probably referring to something that would help him
manage the quarantine itself, such as to query it for FNs, provide
some type of reporting, forward FPs back to the proper recipient,
manage expiry, expunging, and scoring, etc?

Something like this would be very useful, and although it exists in
individual programs, a collective set of programs would be pretty
handy.

After all, maia is based on amavisd, no?

Best,
Alex


Re: Quarantine Management

2010-04-10 Thread Ned Slider

Dennis B. Hopp wrote:
What are people using for quarantine management with spamassassin?  I've 
been using maia mailguard and it works decently but hasn't been updated 
in what seems like forever (svn has been updated, but no formal release).


Just wondering what other tools are out there that people like.

I use postfix as my MTA right now, but am not completely opposed to 
using something else if necessary to use a specific quarantine system.





Amavisd-new works well with postfix.



Quarantine Management

2010-04-10 Thread Dennis B. Hopp
What are people using for quarantine management with spamassassin?   
I've been using maia mailguard and it works decently but hasn't been  
updated in what seems like forever (svn has been updated, but no  
formal release).


Just wondering what other tools are out there that people like.

I use postfix as my MTA right now, but am not completely opposed to  
using something else if necessary to use a specific quarantine system.


Thanks,

--Dennis