Forum Discussion
Exchange 2010 SP3 RU 17 to Exchange 2016 Enterprise CU11 Migration
Hello Good People, I am migrating from Exchange 2010 SP3 RU17 to Exchange 2016 CU 11. My setup is two Exchange 2010(MBX,HT,CA roles ) with DAG setup. I have completed all the prerequisites and ins...
Hi arifsohail92 ,
Thank you so much for providing me such a valuable information. Right now only BASIC authentication is enabled of IIS Authentication Method on Exchange 2010 CAS servers. However, I am able to connect now with Exchange 2010 mailboxes after pointing the name space to Exchange 2016.
I am able to connect to Exchange 2010 mailboxes through outlook even on Local LAN after enabling the checking the option provided by you ( on fast networks, connect using http first).
However, in RPCHTTP logs I am getting following error that server is not available. I am confused now that if error is coming in logs then how outlook is connecting fine.
Question: Can I ignore the logs if outlook is connecting fine for Exchange 2010 mailboxes after pointing the name space to Exchange 2016? If not then i am not sure how outlook is connecting successfully?
Note: For security reason, I have replaced the domain name with mydomain.
"2019-01-22T07:26:07.281Z,da5e7680-86ec-4c54-9f23-3d818d1c7e8b,15,1,1591,10,,RpcHttp,webmail.mydomain.com,/rpc/rpcproxy.dll,,Basic,true,mydomain
\test.migration4,,Url~https://servervpexhc1.mydomain.local/rpc/rpcproxy.dll?
"webmail.mydomain.com:6002,MSRPC,10.80.90.11,PVEXMB01,200,,,RPC_IN_DATA,Proxy,servervpexhc1.mydomain.local,15.00.0000.000,IntraForest,RpcHttpProxyRules,,,,1073741824,,,,0,457,,0,,0,,0,0,,0,3376,0,2831,6,0,,,,,0,1,3376,0,,539,,545,3376,,?
webmail.mydomain.com:6002,,BeginRequest=2019-01-22T07:26:03.904Z;CorrelationID=<empty>;ProxyState-Run=None;FEAuth=BEVersion-
1941962752;NewConnection=10.0.0.115&0;H-BeginGetResponse=2019-01-22T07:26:04.362Z;H-OnResponseReady=2019-01-22T07:26:04.373Z;H-
EndGetResponse=2019-01-22T07:26:04.373Z;NewConnection=10.0.0.115&0;BeginGetRequestStream=2019-01-
22T07:26:04.374Z;OnRequestStreamReady=2019-01-22T07:26:04.380Z;ProxyState-Complete=ProxyRequestData;SharedCacheGuard=0;EndRequest=2019-
01-22T07:26:07.281Z;,WebExceptionStatus=ProtocolError;ResponseStatusCode=503;WebException=System.Net.WebException: The remote server
returned an error: (503) Server Unavailable. at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult) at
Microsoft.Exchange.HttpProxy.RpcHttpProxyRequestHandler.<>c__DisplayClass29_0.<OnValidateBackendServerCacheCompleted>b__0
();SharedCache=AMCacheRemovalFailure;StreamProxy=StreamProxy-Request-ExpectReadCallback;,,,,,CafeV1"
Hello Asif,
In my case i have ignored that error and started my migration and all users were connecting to 2016 mailbox databases.
However if you want to check the root cause of the issue, check with microsoft.
Thanks,
Arif