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Posted to users@spamassassin.apache.org by Matus UHLAR - fantomas <uh...@fantomas.sk> on 2021/10/05 11:40:57 UTC

Re: FSL_BULK_SIG in 72_active.cf

>>>>>> It hits Pyzor for some reason.  Get a PYZOR_CHECK=1.985.  
>>>>>>Must've picked the wrong checksum, chief!
>>>>>>
>>>>>>It does not appear that the actual rule matches the spirit of the rule.

>>>>On 23.09.21 22:07, Kevin A. McGrail wrote:
>>>>>Jared, looks to me like an FP in Pyzor.

>>>On Sat, 25 Sep 2021, Matus UHLAR - fantomas wrote:
>>>>RAZOR, PYZOR and DCC often hit on e-mail with short or no text and
>>>>attachments. (Haven't done stats tho, I can look during workweek.)
>>>>
>>>>Thus, FSL_BULK_SIG tends to hit on such e-mail because they don't have
>>>>unsubscribe header.

>>On 25.09.21 13:19, John Hardin wrote:
>>>Perhaps it needs a short-message exclusion?

>On Sat, 25 Sep 2021, Matus UHLAR - fantomas wrote:
>>short messages with attachments. if you have an idea how, I'll be 
>>glad to try.

On 25.09.21 15:04, John Hardin wrote:
>I've done some masscheck review and tuning of it, added avoidance of 
>hits on very short messages.

I'm afraid it did not help.
It seems that PYZOR_CHECK and DCC_CHECK hit on such mail often and
FSL_BULK_SIG pushes such mail easily over default spam score.

I just analyze a few samples, a few also hit GMD_PDF_EMPTY_BODY 
with sa -D, many of them hit __HTML_LENGTH_1024_1536
(damn microsoft! 1k of "empty" message).

OK, I will work around locally.

-- 
Matus UHLAR - fantomas, uhlar@fantomas.sk ; http://www.fantomas.sk/
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Re: FSL_BULK_SIG in 72_active.cf

Posted by John Hardin <jh...@impsec.org>.
On Tue, 5 Oct 2021, Matus UHLAR - fantomas wrote:

>>>>>>> It hits Pyzor for some reason.  Get a PYZOR_CHECK=1.985.  Must've 
>>>>>>> picked the wrong checksum, chief!
>>>>>>> 
>>>>>>> It does not appear that the actual rule matches the spirit of the 
>>>>>>> rule.
>
>>>>> On 23.09.21 22:07, Kevin A. McGrail wrote:
>>>>>> Jared, looks to me like an FP in Pyzor.
>
>>>> On Sat, 25 Sep 2021, Matus UHLAR - fantomas wrote:
>>>>> RAZOR, PYZOR and DCC often hit on e-mail with short or no text and
>>>>> attachments. (Haven't done stats tho, I can look during workweek.)
>>>>> 
>>>>> Thus, FSL_BULK_SIG tends to hit on such e-mail because they don't have
>>>>> unsubscribe header.
>
>>> On 25.09.21 13:19, John Hardin wrote:
>>>> Perhaps it needs a short-message exclusion?
>
>> On Sat, 25 Sep 2021, Matus UHLAR - fantomas wrote:
>>> short messages with attachments. if you have an idea how, I'll be glad to 
>>> try.
>
> On 25.09.21 15:04, John Hardin wrote:
>> I've done some masscheck review and tuning of it, added avoidance of hits 
>> on very short messages.
>
> I'm afraid it did not help.
> It seems that PYZOR_CHECK and DCC_CHECK hit on such mail often and
> FSL_BULK_SIG pushes such mail easily over default spam score.
>
> I just analyze a few samples, a few also hit GMD_PDF_EMPTY_BODY with sa -D, 
> many of them hit __HTML_LENGTH_1024_1536
> (damn microsoft! 1k of "empty" message).
>
> OK, I will work around locally.

I noticed the PDF attachment hit in masschecks, but presumed (since the 
attachments were images) that it wasn't germane to the OP's problem. I 
should have added an exclusion for that as well. I will later today, 
work is booting up... :)

I'd be interested in the rule hits if you're willing to share.


-- 
  John Hardin KA7OHZ                    http://www.impsec.org/~jhardin/
  jhardin@impsec.org                         pgpk -a jhardin@impsec.org
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