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Re: Spam filtering bcps [was Re: Open Letter to D-Link about theirNTP vandalism]
- From: Joe Maimon
- Date: Wed Apr 12 09:12:59 2006
Matthew Sullivan wrote:
As will sendmail+spamass-milter+spamassassin
Suresh Ramasubramanian wrote:
On 4/11/06, Matthew Black <firstname.lastname@example.org> wrote:Of course Postfix can be setup (using spampd) with spamassassin to do
exactly the same.
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,
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.
I believe Sendmail+MimeDefang+Spamassassin will also reject inline if
set to do so.
In fact there are quite a few milters that can be used in between
sendmail and spamassassin