I am setting up a new Windows Server 2003 machine. There are two companies
sharing it. Each have their own internal IP address ranges in the office.
They each have separate email and domain names. I understand that this would
be a multi-forest setup with separate domain controllers for each company.
There are two network cards in the server.

I have a couple of questions:

1) Should I assign 1 network card to each company using those separate IP
address ranges?
2) Do I need to have more than one outside static IP address to accomplish
this or will one suffice?

Thanks for any assistance.

Re: 2 domains on 1 server by Mark

Mark
Wed May 16 13:24:58 CDT 2007

On Wed, 16 May 2007 09:10:02 -0700, RockDawgLA
<RockDawgLA@discussions.microsoft.com> wrote:

>I am setting up a new Windows Server 2003 machine. There are two companies
>sharing it. Each have their own internal IP address ranges in the office.
>They each have separate email and domain names. I understand that this would
>be a multi-forest setup with separate domain controllers for each company.
>There are two network cards in the server.
>
>I have a couple of questions:
>
>1) Should I assign 1 network card to each company using those separate IP
>address ranges?
>2) Do I need to have more than one outside static IP address to accomplish
>this or will one suffice?
>
>Thanks for any assistance.

There's something missing here. If you have two forests you will need
to have two Exchange organisations (i.e. two servers)
Unless you can decide which one of the two domains is going to host
the Exchange server.
However, there's no need to have two forests at all.
You can create a single forest and give it a generic netbios name. You
can then create two UPN's for the people to use as logons so they get
a sense of their own identity rather than a shared one.
Then you can install a single Exchange instance and use Recipient
Policies to control who gets what address.
Everyone will get a generic one (user@generic.com) and one specific to
their own domain.

Never give an Exchange server an external IP address and never, ever
give it more than one IP address. Routers route, Exchange servers
email. End of.

Have a think about what's been said and what other advice people come
up with and then post a fresh question if you need.