Howdy all,
We are currently running an Exchange 2010 environment. Single server on 2008 R2. One MBX DB, one PUB DB. OAB generation is Web only, Pub disabled. External and Internal URL of webmail.company.com.au. Multi-SAN Certificate by Public CA.
Mixture of Outlook 2010 and 2013.
We are implementing a migration to Exchange 2013. We have a demo virtual environment for testing, and have progressed our live environment up to being ready to migrate mailboxes. So far the demo environment doesn't seem to experience the same issues.
So far 2013 is setup with all of the same settings, same External and Internal URLs so that we can utilize the same certificate. We hope to change the cert at the same time we split Exchange out to 2 2013 servers (which is after an AD domain migration).
Now the problem is occurring when testing Outlook connectivity via manual Host entry, pointing webmail.company.com.au to the 2013 server. Access to shared mailboxes mapped with the 2010 AutoMapping is broken, as well as access to Public Folders. The Connection Status window shows at least 3 connections to 2010 server via RPC/TCP. At first access to both works fine, but after some time (can't be sure on how long) it breaks, and you get an error.
"Cannot expand the folder. The set of folders cannot be opened. Your profile is not configured. (/o=COMPANY/ou=Exchange Administrative Group (ABCDEFGH12IJKLM)/cn=Configuration/cn=Servers/cn=webmail.company.com.au)"
This error has occurred for 5 people I have tested with, including me, with various mapped shared mailboxes.
In the Connection Status window, you do see a flicker of connections that state Connecting and Disconnecting, changing from 2010 server hostname to webmail.company.com.au, with a Type of Exchange Referral, increasing the ID to be up to ~300 before disappearing.
I can supply you with any outputs you need, like Get-OutlookAnywhere:
[PS] C:\Windows\system32>Get-OutlookAnywhere RunspaceId : 7abfc9c7-4926-4667-9ea5-c0078de7bcdd ServerName : EX2010 SSLOffloading : False ExternalHostname : webmail.company.com.au InternalHostname : ExternalClientAuthenticationMethod : Ntlm InternalClientAuthenticationMethod : Ntlm IISAuthenticationMethods : {Ntlm} XropUrl : ExternalClientsRequireSsl : True InternalClientsRequireSsl : False MetabasePath : IIS://EX2010.COMPANY.local/W3SVC/1/ROOT/Rpc Path : C:\Windows\System32\RpcProxy ExtendedProtectionTokenChecking : None ExtendedProtectionFlags : {} ExtendedProtectionSPNList : {} AdminDisplayVersion : Version 14.3 (Build 123.4) Server : EX2010 AdminDisplayName : ExchangeVersion : 0.10 (14.0.100.0) Name : Rpc (Default Web Site) DistinguishedName : CN=Rpc (Default Web Site),CN=HTTP,CN=Protocols,CN=EX2010,CN=Servers,CN=Exchange Administrative Group (ABCDEFGH12IJKLM),CN=Administrative Groups,CN=COMPANY,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=COMPANY,DC=local Identity : EX2010\Rpc (Default Web Site) Guid : 1a65be5f-f469-438f-88c0-0c0c5a92a9d3 ObjectCategory : COMPANY.local/Configuration/Schema/ms-Exch-Rpc-Http-Virtual-Directory ObjectClass : {top, msExchVirtualDirectory, msExchRpcHttpVirtualDirectory} WhenChanged : 30/07/2015 3:49:39 PM WhenCreated : 15/09/2011 10:35:57 AM WhenChangedUTC : 30/07/2015 5:49:39 AM WhenCreatedUTC : 15/09/2011 12:35:57 AM OrganizationId : Id : EX2010\Rpc (Default Web Site) OriginatingServer : DC02.COMPANY.local IsValid : True ObjectState : Changed RunspaceId : 7abfc9c7-4926-4667-9ea5-c0078de7bcdd ServerName : EX2013 SSLOffloading : True ExternalHostname : webmail.company.com.au InternalHostname : webmail.company.com.au ExternalClientAuthenticationMethod : Ntlm InternalClientAuthenticationMethod : Ntlm IISAuthenticationMethods : {Ntlm} XropUrl : ExternalClientsRequireSsl : True InternalClientsRequireSsl : True MetabasePath : IIS://EX2013.COMPANY.local/W3SVC/1/ROOT/Rpc Path : C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\rpc ExtendedProtectionTokenChecking : None ExtendedProtectionFlags : {} ExtendedProtectionSPNList : {} AdminDisplayVersion : Version 15.0 (Build 1076.9) Server : EX2013 AdminDisplayName : ExchangeVersion : 0.20 (15.0.0.0) Name : Rpc (Default Web Site) DistinguishedName : CN=Rpc (Default Web Site),CN=HTTP,CN=Protocols,CN=EX2013,CN=Servers,CN=Exchange Administrative Group (ABCDEFGH12IJKLM),CN=Administrative Groups,CN=COMPANY,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=COMPANY,DC=local Identity : EX2013\Rpc (Default Web Site) Guid : d29caa24-5264-4fa3-8927-4bcd5b8aaa87 ObjectCategory : COMPANY.local/Configuration/Schema/ms-Exch-Rpc-Http-Virtual-Directory ObjectClass : {top, msExchVirtualDirectory, msExchRpcHttpVirtualDirectory} WhenChanged : 30/07/2015 3:50:50 PM WhenCreated : 23/06/2015 5:04:50 PM WhenChangedUTC : 30/07/2015 5:50:50 AM WhenCreatedUTC : 23/06/2015 7:04:50 AM OrganizationId : Id : EX2013\Rpc (Default Web Site) OriginatingServer : DC02.COMPANY.local IsValid : True ObjectState : ChangedThanks in advance!