Exchange 2007 NLB for OWA

OK here is just a hypothetical and looking for an overview vs specific configs -

I would like to cluster both CAS and mailbox servers....
First I would need to enable NLB for the CAS boxes and clustering for the mailbox servers
mail.company.com is setup in my external DNS (registrar DNS)

Then point my MX record to my external firewall IP then have my firewall forward port 443 to the NLB virtual IP.  This should make OWA work among all CAS servers right?

Does OWA need to be set up in a special way going this route?  Example what if I change the internal URL using an HTTP redirect.  IE mail.company.com forwards to mail.company.com/owa
Does this need to be done on all servers?

Port 25 would also be sent to the NLB virtual IP which would then in turn talk to the mailbox cluster?
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ryansotoAsked:
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Rick FeeMessaging Engineer - Disaster Recovery EngineerCommented:
Correct.    CAS/HUB can only be NLB...NAT the virtual IP on the firewall and your set.    Yes redirection is not an issue.

This is straight forward and really no major complex configs are needed.
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ryansotoAuthor Commented:
Excellent info thank you
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