About watermarks

[Julian Field]

Charles Lacroix wrote:
> Julian Field a écrit :
>>
>>
>> Charles Lacroix wrote:
>>> Mark Nienberg a écrit :
>>>> Charles Lacroix wrote:
>>>>> Hi,
>>>>>
>>>>> I had this configuration which reduced alot of bounces going into 
>>>>> user's mailbox.
>>>>> I was quite happy with this but today some users noticed that 
>>>>> gmail's vacation messages
>>>>> were beiing blocked.
>>>>>
>>>>
>>>> The watermark feature examines all messages that have a null 
>>>> sender.  In sendmail logs these are the ones with:
>>>>
>>>> "from=<>"
>>>>
>>>> If gmail uses that approach to send vacation messages, and does not 
>>>> include the original message in the reply, then it will trigger the 
>>>> bad watermark action.   So if you want to be able to receive these 
>>>> and still use the watermark feature, maybe you could just add 2 or 
>>>> 3 points for a bad watermark.
>>>>
>>>> Mark
>>>
>>> As i said in the original post, i tried setting a few points to it 
>>> and it would mark it as spam and not check via spamassassin at all.
>>>
>>> Could i just build a ruleset like this:
>>>
>>> Check Watermarks With No Sender = rules/check.watermarks.rules
>>>
>>>
>>> From:  *.google.com   no
>>> From:  default  yes
>>>
>>> mail comes from hostnames similar to this: 'qb-out-0506.google.com'
>>>
>>> Sould this work?
>> No, as that "From:" will check the sender address and not the SMTP 
>> client IP address. The only way of forcing it to check an IP address 
>> is to put in the netblock definition of their outgoing IP addresses.
>>> Thanks
>>>
>>>
>>
>> Jules
>>
> Ok.
>
> #        /pattern-with-no-letters/ # Any SMTP client IP address 
> matching this
> #                                  # Perl regular expression
>
> How can i know all of gmail's outgoing smtp servers?
>
>
> so if i understand, this would still not work.
> From:   /^.+\.google\.com$/
Correct, it won't work.

Jules

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