Exchange 2007->2013 cert question

I'm about to renew my cert for exchange and after that, I will migrate to 2013.

Here is what I have now:

- my external domain:
- my internal domain:

My cert is for:

Because my internal and external domain is different, I'm using the DNS zone trick so my email server is accessible using the same name internally and externally.

- - - - - - - - - - -

My current setup is only one server but my 2013 setup will incorporate 2 servers: I will be using DAG for database availability and DNS round robin for CAS.


what do I need on my new certificate ?

First of all, I know it will be 'legacy' name for 2007 server but should it be or ?

Also, since I will have 2 new servers using DNS round robin, they will be both using name in CERT, am I right ?

Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Jason CrawfordTransport NinjaCommented:
As long as you are configuring the internal URL for all virtual directories to match the external URL you don't need to worry about covering your internal domain in your cert.

I recently deployed Round Robin for 2013 CAS redundancy between two data centers and it works flawlessly so I think you'll be pleased with the results.  All you have to do is add the WAN IP assigned to each server to the public A record for and you're done.  You can test by opening Outlook and running netstat -ano | findstr "Insert Outlook process ID".  Take note of the WAN IP and diable the NIC on the server the IP is NAT'd to.  Sit back and watch Outlook reconnect to the next IP in the A record within 5 minutes completely free of charge.  It's a beautiful thing.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Iradat SiddiquiCommented:
Please use the SAN (Subject Alternate Name) certificate for exchange , with all the required dns names (internal/external).
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.