why the DAG address ( FQDN or IP ) always resolves to the primary Exchange Server in OUTLOOK?

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need help



why the DAG address ( FQDN or IP ) always resolves to the primary Exchange Server in OUTLOOK?

In this case, when the primary Exchange Server fails, OUTLOOK cannot connect to the DAG in Exchange mode.

but in fact , the DAG already automatically switched database, and the OWA for DAG address is available.

how can i prevent OUTLOOK from resolving the DAG address to the PRIMARY Exchange Server Address?

thank you.
 
N

need help



I find out that OUTLOOK is always directing to the Mailbox server on which the mailbox is created, no matter now which server is the active one in DAG.

I don't know whether it is a MS bug?

There is not RTM sp1 released yet, but all the updates are applied , including the Update Rollup 4.
 
B

Brian Day MCITP



It sounds like you have the CAS role colocated on the mailbox server. You would need to create a Client Access Server Array and change the RpcClientAccessServer attribute of each database to point to the CAS Array name instead of the single CAS server name they are probably pointing at now.

The caveat here is DAG + Windows NLB cannot coexist on the same machine so if all of your servers have CAS+MBX on them and you're using a DAG then you will have no choice but to use a hardware load balancer if you want HA to work for CAS.

 
N

need help



thank ou.

Brian. I got it.

because i use the DC as FSW and after lots of changes , my dev DC is corrupted by me.

I 'm going to migrate teh FSMO the bak DC. and rebuild it.
 
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