8.04 MTA?

Derek Broughton news at pointerstop.ca
Wed Jul 30 14:10:06 UTC 2008


John L Fjellstad wrote:

> "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. 

You _can_ compare apples and oranges, too :-)  Sure, it's a mail server, and
there are bound to be some things that it does the same way as qmail.

>> 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.  
..
> When I looked at postfix a couple of weeks ago, it seemed that it had
> the same behavior, although more "advanced".  

That was my belief.  In fact, I'm not running my own server except for SMTP,
so I haven't used it....

> 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.

The other issue of course is whether you can do that fast enough to actually
handle all the _valid_ incoming mail.  I can't guarantee that postfix can
do this for a busy server.
-- 
derek





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