8.04 MTA?

[John L Fjellstad]

"Steve C. Lamb" <grey at dmiyu.org> writes:

>     In spite of Derek's response Postfix is qmail-esque in that it has
> multiple programs to do multiple things.  Because of this the daemon
> which sits on 25 and accepts mail doesn't do the content filtering.
> It passes it to something else.  However, last I checked, both postfix
> and qmail were incapable of doing content filtering until it passed
> the message to the next program in the chain.  However to pass to the
> next program in the chain they have to accept the message.

Not necessary.

qmail has patches that makes it check the content before it accepts the
message.  Basically, some filtering is done before the message is
accepted (a message is not considered accepted before it is safely
written down on disk in qmail).  This is of course, after a heavily
patched qmail.  Out of the box qmail installation behaves like you
wrote.

When I looked at postfix a couple of weeks ago, it seemed that it had
the same behavior, although more "advanced".  That is, you can attach
certain filters during the SMTP conversation, and these filters
(programs actually) are run.  Only when it pass through the all the
filters, will it accept the message.

Of course, this is just the impression I had reading the documentation
(haven't gotten around to actually run it yet).

-- 
John L. Fjellstad
web: http://www.fjellstad.org/          Quis custodiet ipsos custodes