Yes, you are correct. I fixed the DNS issue by adding an "autodiscover' CNAME and that works. However, connectivity is still now working (see Microsoft Connectivity Analyzer text below):
OutlookAnywhereConnectitivyFailed
We were not able to successfully connect to your email server via the Outlook Anywhere feature.
MCA Client tool is attempting to test Autodiscover for erintell@rintenet.com.
Autodiscover was tested successfully.
Test Results
Testing RPC/HTTP connectivity.
The RPC/HTTP test failed.
Test Results
MCA Client tool is attempting to test Autodiscover for erintell@rintenet.com.
Autodiscover was tested successfully.
Test Results
Attempting each method of contacting the Autodiscover service.
The Autodiscover service was tested successfully.
Test Results
Autodiscover settings for Outlook Anywhere are being validated.
MCA Client tool validated the Outlook Anywhere Autodiscover settings.
Attempting to resolve the host name rintesvr.rintenet.com in DNS.
The host name resolved successfully.
Additional Details
Testing TCP port 443 on host rintesvr.rintenet.com to ensure it's listening and open.
The port was opened successfully.
Testing the SSL certificate to make sure it's valid.
The certificate passed all validation requirements.
Test Results
Checking the IIS configuration for client certificate authentication.
The test passed with some warnings encountered. Please expand the additional details.
Additional Details
Additional Details: Client certificate authentication couldn't be determined because an unexpected failure occurred. WinHttpSendRequest failed with error 12030.
Testing HTTP Authentication Methods for URL https://rintesvr.rintenet.com/rpc/rpcproxy.dll?467e33c4-98ff-496d-b019-afdc65ce1d28@rintenet.com:6002.
The HTTP authentication test failed.
Additional Details
Additional Details: Exception details:
Message: The underlying connection was closed: An unexpected error occurred on a send.
Type: System.Net.WebException
Stack trace:
at System.Net.HttpWebRequest.GetResponse()
at Microsoft.Exchange.Tools.ExRca.Extensions.RcaHttpRequest.GetResponse()
Exception details:
Message: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
Type: System.IO.IOException
Stack trace:
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.TlsStream.ProcessAuthentication(LazyAsyncResult result)
at System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.PooledStream.Write(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.ConnectStream.WriteHeaders(Boolean async)
Exception details:
Message: An existing connection was forcibly closed by the remote host
Type: System.Net.Sockets.SocketException
Stack trace:
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
Testing HTTP Authentication Methods for URL https://rintesvr.rintenet.com/rpc/rpcproxy.dll?467e33c4-98ff-496d-b019-afdc65ce1d28@rintenet.com:6002.
The HTTP authentication test failed.
Additional Details
Additional Details: Exception details:
Message: The underlying connection was closed: An unexpected error occurred on a send.
Type: System.Net.WebException
Stack trace:
at System.Net.HttpWebRequest.GetResponse()
at Microsoft.Exchange.Tools.ExRca.Extensions.RcaHttpRequest.GetResponse()
Exception details:
Message: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
Type: System.IO.IOException
Stack trace:
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.TlsStream.ProcessAuthentication(LazyAsyncResult result)
at System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.PooledStream.Write(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.ConnectStream.WriteHeaders(Boolean async)
Exception details:
Message: An existing connection was forcibly closed by the remote host
Type: System.Net.Sockets.SocketException
Stack trace:
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)