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Re: Spam notification
From: Antoine Nguyen <tonio_at_nospam>Date: Fri Jun 18 2010 - 09:35:49 GMT
To: postfix-users@postfix.org
Le 18/06/2010 11:28, Mark Goodge a écrit :
> On 18/06/2010 10:17, Antoine Nguyen wrote:
>> Le 18/06/2010 11:15, Michael Weissenbacher a écrit :
>>>> Conclusion: the spam is passed! I could stop sending notifications
>>>> but I
>>>>> think my employer would not like it...
>>> Short answer:
>>> You should NEVER notify anyone about detected spam! This will
>>> effectively make yourself a spam source. It's even worse when you
>>> attach
>>> the original message.
>>>
>>> hth,
>>> Michael
>> I agree with that... but what about false positives?
>
> There are three main options:
>
> 1. Just discard spam.
>
> 2. Quarantine spam, and allow the user to check their quarantine
> folder and release it if necessary.
>
> 3. Don't intercept spam, just tag it and leave the actual filtering to
> the recipient's own system.
>
> I'm not a great fan of quarantining, although it works fairly well for
> webmail systems where the quarantine can be accessed through the same
> interface as the inbox (eg, Gmail and Hotmail). It's less helpful
> where mail is delivered to a POP3 or IMAP box as users have to go to a
> separate interface to check the quarantine.
>
> Personally, I prefer to have an approach that's split between
> discarding and tagging - discard anything that's a definite spam, and
> tag the rest. That way, you minimise the worst effects of spam while
> not blocking anything that might generate a false positive.
>
> Mark
.
That's a good approach. I'm already discarding true spams and tagging
the rest (amavisd-new tag2 and kill levels). I think I'm going to
deactivate notifications and wait for eventual complaints from my users
about emails not arriving :-)
Many thanks for those quick answers.
Antoine.