Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism]

[Joe Maimon <jmaimon () ttec com>]

Matthew Sullivan wrote:

> Suresh Ramasubramanian wrote:
>
> > On 4/11/06, Matthew Black <black () csulb edu> wrote:
> >  
> >
> > > Are you suggesting that we configure our e-mail servers to notify
> > > people upon automatic deletion of spam? Frequently, spam cannot be
> > > properly identified until closure of the SMTP conversation and that
> > > final 200 mMESSAGE ACCEPTED...or do you think that TCP/IP connection
> > > should be held open until the message can be scanned for spam and
> > > viruses just so we can give a 550 MESSAGE REJECTED error instead of
> > > silently dropping it?
> > >
> > >   
> >
> >
> > You can reject right after DATA, at the <CR><LF>.<CR><LF> stage, 
> > before QUIT
> >
> > That's still an in line smtp reject rather than an accept + bounce DSN.
> >
> > Exim with the spamassassin patches (sa-exim) does this, for example.
> >
> > -srs
> >  
> Of course Postfix can be setup (using spampd) with spamassassin to do 
> exactly the same.
>
> I believe Sendmail+MimeDefang+Spamassassin will also reject inline if 
> set to do so.
>
> Regards,
>
> Mat

As will sendmail+spamass-milter+spamassassin

In fact there are quite a few milters that can be used in between 
sendmail and spamassassin

Joe