Am 18.06.2014 16:17, schrieb Jürgen Herrmann:
> Am 18.06.2014 15:59, schrieb li...@rhsoft.net:
>> Am 18.06.2014 15:49, schrieb Jürgen Herrmann:
>>> I have a problem with the following pcre table:
>>>
>>> if !/X-Spam-Level:.*\*{7,}/
>>> /X-Spam-Flag:.*YES/ HOLD
>>> endif
>>> /X-Spam-Level:.*\*{7,}/ DISCARD
>>>
>>> the HOLD part of it is executed. the DISCARD part never matches.
>>>
>>> I also had a version with
>>> /X-Spam-Level: \*{7,}/
>>> instead of
>>> /X-Spam-Level:.*\*{7,}/
>>>
>>> and also the following version does never discard any mails:
>>>
>>> /X-Spam-Flag:.*YES/ HOLD
>>> /X-Spam-Level:.*\*{7,}/ DISCARD
>>
>> are you aware that you *must not* answer with 250 OK and the
>> silently discard messages? the spamfilter belongs *pre-queue*
>> and you have to REJECT spam, after you receive it and answer
>> with "250 OK" you have to deliver the message - period
>>
>> http://wiki.apache.org/spamassassin/IntegratePostfixViaSpampd
>> "and the ability to use before-queue content filtering"
>>
>> fix your setup and get rid of the broken pcre-after-queue idea
> 
> this is in a milter_header_checks and on a host used as relay
> host. so if i reject mail there it would create backscatter via
> the relaying host. why not discard mails that are surely spam?

why not discard mails which are surely spam?

because you can not say "surely", a filter without false positives
is just a dream and because the sender has to know that the are
not accepted to have a chance re-send, a spammer won't do that

you bring anybody in big trouble debugging mailproblems

one complains why a message was not answered
the other says "i never got a email"
the sender says his operator said the message was accepted

*always* the first station has to check and reject mails
and after accepting it it must not be rejected on the
next hop while discard is always a very bad idea

> i can only see a solution to this problem when installing SA
> on every mailing host, which is what i wanted to avoid.

every first hop in your own network has to make the decision
if a mail is accepted or rejected

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