multiple mail servers with ISA



Given this hypothetical situation, could anyone please advise on how to
configure ISA to allow for this:

We have 2 SMTP email server configured to route mail for 2 different
domains. Due to a merger these systems have to remain separate and run on
different technologies.

I would like to know how to configure ISA so that we can route email for
both domains on different servers, using 2 different IP addresses of which
we need to be able to perform reverse DNS lookups. By default all outbound
traffic routes through the default IP address of ISA.

So the situation as it stands is:

Server 1 -

Outbound IP address: xxx.xxx.xxx.15

Inbound IP address: xxx.xxx.xxx.1

Mail Domain: acme.com

Server 2 -

Outbound IP address: xxx.xxx.xxx.15

Inbound IP address: xxx.xxx.xxx.2

Mail Domain: ourdomain.com

Please can anyone let me know if it's possible.

Many Thanks.



.



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