Exchange & RDS internetaccess multiple servers

Good afternoon,

I've setup a new server with 2012r2 as a host. There are three VM's:

VM1 is the DC
VM2 is the RDS
VM3 is the Exchange 2013.

I've used as a guide for RDS.

The internal AD domainname is
The external e-mail domainname is

I've created the DNS forward lookup zones and pointing to the coresponding ip-adresses, so we can use these later to access from the internet.

The RDS servername is
The Exchange servername is

In ECP (servers, virtual folders) I've used the same internal and external url for accessing the server (all names in the list):

I've registered a certificate at Comodo's with these names:

We have one public IP-address and use a Vigor 2960 as firewall.

Problem one. Outlook still pops up with an error message that the name on the certificate is not the same one as Outlook is trying to access. Outlook points to I can't figure out what to change and where to change it, other than putting a fourth name on the certificate.

Second: I've created two port forwardings on the firewall. IP Port 25 and 443 are forwarded to the Exchange 2013 machine. I'm not sure how to grant internet access to the RDS since this server also uses https for connecting to it. How do I solve this?

Who is Participating?
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.

You need separate public IPs for the Exchange and RDS servers because they both require TCP/443 (HTTPS) to be available from the Internet.

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
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
Windows Server 2012

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.