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Need to setup external DNS for 2 servers running exch 2013 DAG

We currently have our DAG setup with 2 exch 2013 servers. Right now if the dbs flips over to the passive node, we have our network guys make the switches on the routers so that it now points to the passive server instead of the one that was active, because there is only 1 outside IP address.
Now we are going to add another external IP address so that in the event the dbs ever fails over to the other server, we don't have to have the network team make any changes. They are going to set this up with the second external IP address..
My questions is, do I have to make any changes in the external dns for this to work or with the internal dns?

ASKER CERTIFIED SOLUTION

Ben Personick (Previously QCubed)

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vmich

ASKER

Awesome information.
Thank you..

Sunil Chauhan

from your comments, what I believe is that you have cross site DAG,
this sound so strange, Organization opted for a Cross Site DAG design to implement,

so don't you have any reverse proxy or load balancer in front of your CAS which can manage this automatically without doing DNS flips??

Ben Personick (Previously QCubed)

Also, don't forget you'll want to add an MX record for both of these as well so that either Ip can send an receive mail.

Likewise if you use SPF you'd want to include them there as well.

vmich

ASKER

Yes we are adding the second IP to the MX records...

vmich

ASKER

setup cnames

Ben Personick (Previously QCubed)

Glad to help you out :)