On Wed, 2006-10-25 at 17:21 -0400, David Chaplin-Loebell wrote:
> John Simpson wrote:
> > On 2006-10-25, at 1614, Ingo Claro wrote:
> >
> >> Jeff Koch escribió:
> >>
> >>>
> >>> We are getting demands from large ISP's - Comcast, AOL, AT&T -  that 
> >>> we spam filter all outgoing email. We're using simscan to  filter 
> >>> incoming email but I think that misses email generated by  our 
> >>> customers and autoresponders. Can it be accomplished by  modifying 
> >>> /home/vpopmail/etc/tcp.smtp ?
> >>>
> >>> How are other qmail users handling this?
> >>
> >>
> >> i'm also interested in this feature. Have you found how to filter  
> >> outgoing messages? for incoming messages I use maildrop
> >
> >
> > you can still use simscan. the trick is to make your customers send  
> > their mail through simscan.
> [snip]
> I'm not sure that spam-filtering outgoing mail is a good idea-- I've 
> never run into an implementation that doesn't annoy legitimate customers 
> sending legitimate mail-- and simscan is, as far as I know, specifically 
> designed not to allow it.  If RELAYCLIENT is set, simscan checks for 
> viruses but it doesn't run SpamAssassin.
> Am I missing something?

Yeah, Free ISPs who have spammers sign up.  I've been fighting with this
for quite a while.   I've ended up having multiple qmail installs to do
this.  One to receive the email, one to spam scan it and relay it out.  
This seems to work well, I check the queues and clear out those emails
and users - block those sending IP's if necessaary.

My big problem is - how do I convert a single email with 50 TO:
addresses into ONE email to be spam scanned?  

I think I need to run a different email server for the intital queue -
but this then brings up questions like, how do I use SMTP AUTH with,
say, Exim, and vpopmail?

The whole spam/antivirus requirements have turned a nice 'email server'
into a multiple install/multiple queue hell - and I only have about 2k
regular users.


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