Exchange 2010 Hub/CAS - where to route inbound mail?

  • Thread starter RAM
  • Start date Views 1,683
R

RAM

I am in the process of transitioning from Exchange 2003 SP2 to

Exchange 2010.

I've set up 2 servers running Exchange 2010 with combined Hub

Transport and Client Access roles. I am using Windows Load Balancing

for the CAS array. My understanding is that the Hub Transport roles

will automatically load balance.

In front of these servers I have a firewall and an email filtering

server. The firewall routes all SMTP traffic to the email filter

server. The email filter server then routes allowed mail to my

existing Exchange 2003 front-end server, which then delivers the mail

to the appropriate back-end mailbox server.

My question is this: where (what ip) do I have the email filter server

route mail for Exchange 2010? The CAS array IP or one of the Hub

Transports? Do I need to set up another Windows Load Balancing

"cluster" for the Hub Transports? (can I even do that?) Or do I need a

hardware load balancer for the Hubs, and route the mail to that IP?

Thanks in advance.

-RAM
 
A

Andrew Hodgson

On Tue, 4 May 2010 07:55:52 -0700 (PDT), RAM <rmilbrand@gfnet.com
wrote:


> I am in the process of transitioning from Exchange 2003 SP2 to
> Exchange 2010.

> I've set up 2 servers running Exchange 2010 with combined Hub
> Transport and Client Access roles. I am using Windows Load Balancing
> for the CAS array. My understanding is that the Hub Transport roles
> will automatically load balance.

> In front of these servers I have a firewall and an email filtering
> server. The firewall routes all SMTP traffic to the email filter
> server. The email filter server then routes allowed mail to my
> existing Exchange 2003 front-end server, which then delivers the mail
> to the appropriate back-end mailbox server.

> My question is this: where (what ip) do I have the email filter server
> route mail for Exchange 2010? The CAS array IP or one of the Hub
> Transports? Do I need to set up another Windows Load Balancing
> "cluster" for the Hub Transports? (can I even do that?) Or do I need a
> hardware load balancer for the Hubs, and route the mail to that IP?


I would start by looking at this article:

http://www.msexchange.org/articles_tutorials/exchange-server-2007/planning-architecture/load-balancing-exchange-2007-sp1-hub-transport-servers-windows-network-load-balancing-technology-part1.html

Thanks.

Andrew.
 
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