On Thu, 2003-01-16 at 16:26, Ross Vandegrift wrote:
> On Thu, Jan 16, 2003 at 09:40:00AM +0000, Ian MacDougall wrote:
> > We have a similar structure, but for reasons I won't go into we have SA
> > behind our primary mailservers.
> 
> Actually, would you mind going into this?  It seems really strange to do
> it this way, but I'm sur eyou have reasons.  I'd be interested in
> learning why someone would setup like that.

Oh OK (and sorry for the ugly disclaimer).

The primary reason was that I could control how the mail flowed from our
primary mailservers into the new machine running SpamAssassin, so whilst
I was testing I could harvest off 2 or 3 email addresses and only send
them through the spam filtering. In this way I could test whether the
system I had built worked as I expected without disrupting the entire
company's email and as I grew more confident that the connectivity of
the system and logic of the code was correct I was able to gradually
increase the load on the server. I could just as easily remove the
system from the infrastructure again without disruption to the email
system.

I would agree with the inference in your question that it would be
better to deploy the spam filtering as close to the perimeter of the
network as possible, and now that I know the system I have works, it is
a possibility that I will move it to be the primary mailserver in our
infrastructure (if I get time :) )

-- 
Ian MacDougall



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