Watermark and User Notification
Julian Field
MailScanner at ecs.soton.ac.uk
Fri Jun 13 14:01:14 IST 2008
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Check Watermarks With No Sender
Donnie D. Quindardo wrote:
> I'm rather certain that I've tried this; however, I'll try again. For
> which mailscanner setting should this exception occur?
>
> Julian Field wrote:
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>> It puts in 0.0.0.0 if there was no IP address present at all.
>> Maybe I should change that to 127.0.0.1?
>> What does anyone think of that change?
>>
>> Currently, you need to change your "From" line to
>> From: 0.0.0.0 no
>> FromOrTo: default yes
>>
>>
>> Donnie D. Quindardo wrote:
>>> Message 3EDEA100004C.D62FF from 0.0.0.0 has no (or invalid)
>>> watermark or sender address
>>>
>>> Hmmm. :-)
>>>
>>> Donnie D. Quindardo wrote:
>>>> Unfortunately, this is not working.
>>>>
>>>> /etc/MailScanner/MailScanner.conf:
>>>>
>>>> Scan Messages = %rules-dir%/scan.rules
>>>>
>>>> /etc/MailScanner/rules/scan.rules:
>>>>
>>>> From: 127.0.0.1/32 no
>>>> FromOrTo: default yes
>>>>
>>>> The notification message sent by "Notify Senders" if their
>>>> attachments are blocked is still being flagged as spam.
>>>>
>>>> Please advise,
>>>>
>>>> Don Q.
>>>>
>>>>
>>>> Julian Field wrote:
>>>>>
>>>>> Scott Silva wrote:
>>>>>> on 6-12-2008 1:26 PM Julian Field spake the following:
>>>>>>>
>>>>>>> Scott Silva wrote:
>>>>>>>> on 6-12-2008 1:10 PM Julian Field spake the following:
>>>>>>>>>
>>>>>>>>> Donnie D. Quindardo wrote:
>>>>>>>>>> - Configure MailScanner to notify users that their
>>>>>>>>>> attachments have been blocked.
>>>>>>>>>>
>>>>>>>>>> - Configure MailScanner to use Watermarks and note that
>>>>>>>>>> messages that have no sender and no watermark are spam.
>>>>>>>>>>
>>>>>>>>>> - Send an e-mail through MailScanner with an attachment that
>>>>>>>>>> is banned, perhaps "test.com".
>>>>>>>>>>
>>>>>>>>>> - Look in the spam quarantine of MailScanner, the
>>>>>>>>>> notification e-mail that is sent to the user is there. That's
>>>>>>>>>> because it is sent with an envelope address of <> and does
>>>>>>>>>> not get a MailScanner Signature beforehand.
>>>>>>>>> In which case you just need to use a ruleset to exempt mail
>>>>>>>>> from 127.0.0.1 from watermarking checks. Should I do this
>>>>>>>>> automatically in the code, or are there situations in which
>>>>>>>>> this isn't the desired behaviour?
>>>>>>>>>
>>>>>>>>> Jules
>>>>>>>>>
>>>>>>>> Does a ruleset on scan messages also cover this, or is
>>>>>>>> watermarking outside that catch-all?
>>>>>>> You don't need to do anything that radical, you just need a
>>>>>>> ruleset on the option that controls the checking of watermarks.
>>>>>>>
>>>>>>> Jules
>>>>>>>
>>>>>> Let me re-phrase this... If you already have a rule in scan
>>>>>> messages for mailwatch releases, will it also cover the watermark
>>>>>> code?
>>>>> If the rule is on "Scan Messages" then yes, it will cover everything.
>>>>>
>>>>> Jules
>>>>>
>>
>> Jules
>>
>> - -- Julian Field MEng CITP CEng
>> www.MailScanner.info
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>> PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654
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>>
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>>
Jules
- --
Julian Field MEng CITP CEng
www.MailScanner.info
Buy the MailScanner book at www.MailScanner.info/store
Need help customising MailScanner?
Contact me!
Need help fixing or optimising your systems?
Contact me!
Need help getting you started solving new requirements from your boss?
Contact me!
PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654
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