-------- Original-Nachricht --------
> Datum: Fri, 13 Nov 2009 20:25:09 +0100
> Von: Julien Valroff <jul...@kirya.net>
> An: dspam-devel@lists.sourceforge.net
> Betreff: Re: [Dspam-devel] Requests.

> Le vendredi 13 novembre 2009 à 17:36 +0100, Steve a écrit :
> > -------- Original-Nachricht --------
> > > Datum: Fri, 13 Nov 2009 17:15:35 +0100
> > > Von: Julien Valroff <jul...@kirya.net>
> > > An: dspam-devel@lists.sourceforge.net
> > > Betreff: Re: [Dspam-devel] Requests.
> > 
> > > Hi Steve et al,
> > > 
> > Hallo Julien,
> 
> Hi again,
> 
> > 
> > > Le vendredi 13 novembre 2009 à 17:04 +0100, Steve a écrit :
> > > > -------- Original-Nachricht --------
> > > > > Datum: Fri, 13 Nov 2009 12:30:46 -0300
> > > > > Von: "Edgar Díaz Orellana" <eorel...@fulltimehosting.net>
> > > > > An: dspam-devel@lists.sourceforge.net
> > > > > Betreff: Re: [Dspam-devel] Requests.
> > > > 
> > > > > Hi steve and folks.
> > > > > 
> > > > Hallo Edgar,
> > > > 
> > > > 
> > > > > i'm refer about a have some info of what size had the processed
> email
> > > by
> > > > > dspam, not how is the max size of the processed email by dspam,
> there
> > > are
> > > > > 2
> > > > > diferent things.
> > > > > 
> > > > I know. But you wrote "because no spammer send an email with 10MB or
> > > > related". So if you already know that no spammer will send such big
> > > > messages then set the limit (MaxMessageSize) inside DSPAM to be at
> > > > 10MB or less. Then you know for sure that any message equal or
> bigger
> > > > then 10MB will NOT be checked by DSPAM. Do you understand what I
> mean?
> > > 
> > > I hadn't thought to this feature until now, it seems actually quite
> > > interesting.
> > > 
> > It's a life saver in production :)
> > 
> > 
> > > Messages over the MaxMessageSize still go through DSPAM but are not
> > > actually checked am I right?
> > > 
> > Correct. DSPAM will even not add any headers to the message. It will
> > just take the message and see that it is over the MaxMessageSize and
> > send the message back as usual but not adding/modifying anything.
> > 
> > 
> > > What about Clamav check?
> > >
> > I don't know. Have to check the code.
> > 
> > 
> > > It could be problematic as infected mail could be larger than the
> > limit
> > > (just a guess). Maybe it could be worth adding the same limit for
> > > Clamav, what do you think?
> > > 
> > ClamAV already has this implemented. It's called "StreamMaxLength". I
> > don't know if there is a way for DSPAM to check what the maximum is
> > before trying to send the message to ClamAV daemon. I need to read the
> > documentation and see if there is something like that implemented. If
> > it is then I can already tell you now that DSPAM does not check for
> > it. At least I have not stepped over it while working on the DSPAM
> > code.
> 
> Actually, even if that option cannot be retrieved from DSPAM,
>
Unfortunately ClamAV does not offer the possibility to query the 
StreamMaxLength over the local socket or TCP socket:
http://www.clamav.net/doc/latest/html/node26.html

Off course one could read clamd.conf and query the size from there but that is 
not a valid option if clamd is on a remote system.


> I think it
> would be good to have one within DSPAM, so that messages above the
> MaxMessageSize limit can be checked by clamav (maybe the default value
> can be the same to begin with)
> 
I see other things that need as well to be checked:
 - blacklists
 - blocklists

So beside ClamAV scanning we should have a option to say:
Don't tokenize/classify if size >= MaxMessageSize
 [Y/N] do blacklists
 [Y/N] do blocklists
 [Y/N] do ClamAV scanning


> I will add this to SF as a feature request so that it isn't forgotten.
> 
> Cheers,
> Julien
> 
Steve
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