Gustavo Balduino:
> From what you two concluded, there's no way to reach this behavior
> without splitting the instances, am i correct?
A single instance may be possible but it would be more complicated
and more difficult to maintain than to the two-instance approach.
It would in fact be the simplest if you could run the MSA instance(s)
and the MTA instance(s) on different hosts (so that they have
different IP addresses).
Then, the MSA can safely be used for all customers, not just for
the customer that requires a security gateway. With distinct IP
addresses there is no risk of false 'mailer loop' detections when
the MSA delivers messages directly to the MSA instance from customers
that don't use a security gateway. Viktor was correct and I missed
a subtle nuance when I replied to his post.
Wietse
