Most likely, Johnny Spammer monitoring this list will just add a FAKE
header to take advantage of such a rule.

Matt Kettler wrote:
> Matus UHLAR - fantomas wrote:
>
>> On 13.07.07 17:04, arni wrote:
>>
>>
>>> From large providers i sometimes recieve messages through encrypted
>>> smtp, the header looks smth like this (qmail):
>>>
>>> ... with (AES256-SHA encrypted) SMTP; ...
>>>
>>>
>>> Would it be a good idea to give a minimal negative score on this -0.1 or
>>> -0.2 if this happens on the last hop? - It proves that the sending smtp
>>> server is very protocol sane, which spambots are usually not.
>>>
>>>

>> it just proves that the mail was sent through sane server, but there could
>> be spambod behind it.
>>
>> -0.1 and -0.2 is very small numbers. Do you encounter any case where that
>> would help?
>>
>>
>>

> Autolearning.
>