Hi Stevan,
I was wondering if you already had time to start the small documentation on how
to effectively use dspam in a non-homogenous multi-domain mail hosting
environment?
Let me know if there is anything I can help with.
Regards
ML
On Tuesday, February 4, 2014 4:28 PM, Stevan Bajić <ste...@bajic.ch> wrote:
Hello ML,
you are right about the out of the box experience. A tool that is mainly rule
based like SpamAssassin has an advantage over DSPAM in the beginning.
I have not the same opinion about groups as you. If you use a global user and
train it properly you will not have issues where one would have pharma/meds
mail while another user would have those classified as spam. The point is that
normal pharma/meds mail are way to different than those pharma/meds mails used
for spamming. The key here is to use one of the more sophisticated tokenizers
(sbph or osb). I would be very much surprised if you would have a lot false
positives/negatives. You wrote something about Dovecot. If you use the
anti-spam plugin in Dovecot and maybe an sieve script that moves spam messages
to the spam folder then users using IMAP will very quickly train DSPAM by just
working with their email client.
In my experience most users have no more than one or two first days where they
have to correct DSPAM until the engine picks up their mail habit. After that
they have less and less FP/FN.
I could write a small docu how to setup that global user and how to train it.
But I don't know when I have the time in the next days to do so. Let me know if
you are interested and maybe if you could help me with it (my English is not
the best).
--
Kind Regards from Switzerland,
Stevan Bajić
Am 2014-02-04 15:45, schrieb ML mail:
Hi Stevan,
>
>
>My main concern is that it does not work out of the box such as other
>anti-spam tools like spamassassin. What I mean here is that dspam needs to go
>through a phase of learning, which means that most of the users will receive
>for quite some time a certain amount of spam in their inboxes and will have to
>manually teach dspam (by drag&dropping the mail into the spam folder for
>example). This means that users will get annoyed and complain... some users
>are just lazy and will not do that and some users use POP3 protocol so don't
>even have the chance to move the mail to a spam folder.
>
>
>A solution would be to have a a globaluser (using groups) with a shared
>spam/ham corpus which would have been trained beforehand. I have tested that
>but it doesn't work well at all because of a non-homogenous mail user accounts
>(for example one user account might receive a lot of pharma/meds mails related
>to his work whereas for another this would be spam).
>
>
>Right now I did not find any working solutions to bootstrap dspam to a level
>where it would already minimize the spam received of every mail account. This
>is really my main issue. Once dspam personally trained I can see it is really
>working well but I really can't see all the users going through this process...
>
>
>Any thoughts?
>
>
>Regards,
>ML
>
>
>
>On Tuesday, February 4, 2014 3:22 PM, Stevan Bajić <ste...@bajic.ch> wrote:
>
>Hello ML,
>
>I use DSPAM in such an environment. Might I ask you why you think that DSPAM
>is not the best choice for such an environment?
>btw: personally I believe that nothing is the best choice. Everything is good
>and bad.
>
>--
>Kind Regards from Switzerland,
>
>Stevan Bajić
>
>Am 2014-02-03 17:21, schrieb ML mail:
>Hello,
>>
>>I would like to use dspam as the unique anti-spam filtering method on a mail
>>server (postfix+dovecot) which will host many domains and many mail user
>>accounts. Having played a bit with dspam, I have the feeling dspam is not the
>>best choice for such a non-homogenous environment. Would anyone still
>>recommend using dspam in such an environment?
>>
>>And if yes, which configuration parameters/options/features would you
>>recommend to use? any tips?
>>
>>Cheers,
>>ML
>>
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