Unable to connect outlook to exchange server

Right now, вЂњGet-MailboxDatabase | fl name,*rpc*вЂќ Tells me the RPC server for the old databases is the old server and the RPC server for the new databases is the new server. If your just migrating all your services from Server A to Server B (lease is up on Server A so just moving things to new hardware) so in the end youвЂ™ll only have Server B running, is it still necessary to create the CAS array? I thought outlook 2010 would automatically re-home itself to the new server as long as the old server was still online at the initial attempt to access the mailbox? The servers are running in 2008R2 and the exchange is 2010 SP1 but still it is pointing to old server, so we forced to move the mailbox of having issues to the in-house server. we were checking on the House server if there any registry that related to the old aws server and those already removed from the entry. but some point when we configure the new outlook client for the users, it is actually pointing the old aws server name and the same time the same user with some other computer it works fine. now the emails are getting the users through the aws. so what happened now, some users mailbox moved well and those working perfect, some users still there in the in-house server those were failed in 80% and the mailbox size is almost 6-17 GB each those were unable to move. Now when it turn to our side, we rebuilding the HA in aws again, but due to unprofessional implementation the DAG was unable to move and even we couldnвЂ™t replicate with the AWS, so we decide to move the existing mail box to aws and make this as primary, then rebuild the in-house exchange and replicate it again. We have an odd issue with one of our customer that they had an HA in AWS and they recently replaced their IT support team so what they did, they simply disconnected their aws service from them and just given the primary access to the exchange that is the primary is located in-house. We are finding that some exchange services on the mailbox server donвЂ™t start, and there is nothing in event viewer to indicate what the problem is.Д«ecause the CAS is in a DMZ I can see traffic on the firewall being denied to the OLD IP address and no traffic flow at all to the new IP address.ДЄt first I though it must be the Alias for the CAS server that is defined on the Firewall, but this is set to the new IP address, not the old one.ДЄny pointers that you can provide would be appreciated. Changing that IP address stops clients connecting to the mailbox server, even though the DNS updates correctly, pinging from the client to the CAS FQDN is fine, ping from the mailbox server to the CAS is fine. We havenвЂ™t created a CAS array, so DNS points the CAS FQDN to its physical IP address.

IвЂ™ve recently come across your site, so my apologies if this question has already been answered, but we have been trying to simply change the IP address of the single CAS server within our AD site. The association can be seen on the mailbox database attributes by running this command in the Exchange Management Shell.

If the Client Access server role is removed from the single Exchange server and deployed to a new server, all of the existing mailbox databases are no longer associated with a valid RPC Client Access service name. Thanks to the componentized server role architecture of Exchange Server 2010 it is possible to move this role between servers to suit the needs of the organization.ДЇor example, an organization may deploy Exchange Server 2010 on a single server, and then later scale that out to separate the Client Access server role to a different server.Д®ach mailbox database in the organization is associated with an RPC Client Access service in the same AD Site when it is first created. Unlike the previous versions of Exchange in Exchange Server 2010 all client communications, including MAPI clients, connect to the RPC Client Access service running on the Client Access server role. Contact your administrator if this condition persists.

Outlook clients may receive an error when they try to connect to mailboxes after the Client Access server role is moved between two Exchange Server 2010 servers.Д¬annot start Microsoft Office Outlook.

Unable to connect outlook to exchange server