Comments on: Installing an Exchange Server 2016 Database Availability Group

By: Cole Byrne

Cole Byrne — Thu, 16 Dec 2021 21:38:33 +0000

Thanks for sharing this! All the best!

By: Mohamed Elmasry

Mohamed Elmasry — Mon, 18 Nov 2019 07:44:28 +0000

Hello Paul,
I have a problem after we configured the Dag for the firewall publishing rules I replaced the original EXchange IP with the witness server IP.
We receive Emails but we cannot send.

Is something wrong configured here ?

Thanks In Advance,…

By: Gladys Kelsey

Gladys Kelsey — Mon, 12 Aug 2019 23:25:21 +0000

Enjoyed reading this, very good stuff, thanks.

By: Julien

Julien — Thu, 28 Mar 2019 14:45:19 +0000

In reply to Julien. To answers my own question, the advice is to use the DNS round robin solution in case you do not have a failover solution in front of your IP-Less DAG

By: Julien

Julien — Fri, 22 Mar 2019 10:09:57 +0000

Hello Paul,

Thanks for all the articles, they helped me to update my knowledge.

But I’m facing an Exchange 2016 installation done by a supplier and I had to resolve all bad things he did.

We have here a DAG of 2 Exchange 2016 updated to CU12
The DAG is IP-Less

In this case, how it works:
– When we place one of the two server in maintenance mode ? Without a unique IP, how is it supposed to balance the traffic to the available node ?
– Almost the same question for the non outlook client, how are we supposed to configure them ? With an IP of only one node ? But in this case, there will be no high availability ?

Thanks for you support

By: Kevin

Kevin — Fri, 08 Feb 2019 19:13:29 +0000

Currently I have three sites and each site has DAG with two Exchange 2016 CU 10 servers; running on ESXI 6.0 hosts. Wanting to create another Exchange server for each site and add in a 3rd Exchange 2016 CU 10 server and add one to each DAG. My question is once I do this the need for the witness server is removed; do I need to remove the witness server?

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rbx multiple — Wed, 28 Nov 2018 07:11:07 +0000

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Installing an Exchange Server 2016 Database Availability Group

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Rules of survival cheat — Tue, 23 Oct 2018 07:15:10 +0000

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Installing an Exchange Server 2016 Database Availability Group

By: Steve

Steve — Tue, 18 Sep 2018 14:16:22 +0000

ah ha ! i want to setup dag, i have one exchange 2016 server, so i see here the other server just needs to be a member server ??? i am petrified of playing around with my exchange server !!! hopeit all goes well.

By: Jide

Jide — Tue, 11 Sep 2018 21:43:39 +0000

Hi Paul,
Is there a way to create an IP-Less DAG in Exchange 2016 without having the error “object reference not set to an instance of an object”?
I have tried everything i saw on the in internet. I have checked from PowerShell and the DAG appears to be perfectly fine but this error in ECP is annoying.
I’m just thinking that maybe it’s giving the error given that there’s no Administrative Point to manage the cluster.