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<p class=MsoPlainText><span lang=EN-US>Hello,<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoPlainText><span lang=EN-US>I run a mailscanner configuration, using
postfix, spamassassin and mailscanner. Mail accounts stores in an sql database.<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoPlainText><span lang=EN-US>Today I started to receive what seemed
to be a Spam attack. Two of the accounts were filled with all sort of junk mail.
The messages are in several languages, and came from different ip's from
several different places.<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoPlainText><span lang=EN-US>The situation is really annoying because
the mails are still coming in, even receiving dozens of those mails per minute,
filling the mailboxes with garbage.<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoPlainText><span lang=EN-US>All of these mail one thing in common.
These have empty “from” addresses. So mailwatch flags the mail as light
spam (the kind of spam that gets its subject marked but it's delivered to the
recipient anyway), giving the following message in the spam report:
"spam(no null-header or sender address)". The spam score remains in
0.<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoPlainText><span lang=EN-US>I would like to modify mailscanner so
that messages with empty from-addresses get filtered as usual mail, going
through the regular scoring other mails do. <o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoPlainText><span lang=EN-US>Could you please help me with this?<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-US>I have been looking around a lot but
still have not found a solution.<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoPlainText><span lang=EN-US>Thank you all.<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-US>Best regards,<o:p></o:p></span></p>
<p class=MsoPlainText>Piero <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-US>P.S.:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I found a post in google that had a similar
problem. It was fixed by changing a configuration from<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>“Treat Invalid Watermarks With No
Sender as Spam = spam”<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>To<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>“Treat Invalid Watermarks With No
Sender as Spam = nothing”<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>However I do not know in which
configuration file this option can be changed to try it out. I am sort of a newbie
in this.<o:p></o:p></span></p>
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