Exchange 2010 Outlook Anywhere setup

Environment: Exchange 2010 on Server 2008; ADDC; also running DNS
This server is doing all Exchange roles -- it's a single server. There is another DC in the form of an old Server 2003 box, but it has nothing to do with Exchange.

Certificate is GoDaddy and appears fine.

Internal domain is abc.local; "real" domain is Server is reffered to as on the outside world and internally.

Port 443 (https) is mapped over on firewall from the RIPE IP to the internal IP. The firewall is a Cisco PIX.

OWA works fine to this server from the outside world as well as interally. Internally either to or and externally just to of course.

DNS is set up internally for as well.

I have been through the "Outlook Anywhere" wizard on the server with BASIC authentication; and it appeared to complete correctly.

If I ping internally I get responses from internal IP per DNS.
If I ping mail externally I get responses from correct RIPE IP per DNS.

IPv6 is deselected on the adapter settings of the single enabled network card on the server.

If I telnet to ports 6001, 6002 & 6004 internally it works and I get the correct response. The ports are blocked from the outside world, but I tested unblocking them and mapping across breifly and I got the same response -- but it didn't fix the issue so I closed them off again.

When I run the RPC over HTTP test at it all works until the point:

Attempting to ping RPC endpoint 6001 (Exchange Information Store) on server
  The attempt to ping the endpoint failed.
   Tell me more about this issue and how to resolve it
   Additional Details
  The RPC_S_SERVER_UNAVAILABLE error (0x6ba) was thrown by the RPC Runtime process.

Where do I go from here, please? (I have Exchange 2003 servers working fine, and it's supposed to be easy on 2010!!)

Many thanks in advance.
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Does simple OWA work across the Internet?

You have enabled Outlook Anywhere on the Exchange 2010. Just to confirm., I think you would see different errors if not

The traffic should flow only 443 only.

Check this

I would change that requestLimits maxAllowedContentLength="2147483648" setting and run the iisreset.


seworbyAuthor Commented:
Dear Mark,

Many thanks for your response.
I can confirm that OWA is fine; and that Outlook Anywhere was enabled with the wizard.
Thanks for your confirmation re: 443 only being required on the firewall which was as I had expected.

I undertook the following steps mostly thanks to your link:

Where abc is the local server name; domain is the local domain name, and is the domain to the outside world:-

Added: abc abc.domain.local
to the hosts file. Ping abc now gets replies from the server's RIPE IP rather than :::1.

This did not fix the problem, not in itself at least.

The following already existed in C:\Windows\System32\inetsrv\config\applicationHost.config

 <requestLimits maxAllowedContentLength="2147483648" />

so I did not make any changes.

ValidPorts key in HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\RpcProxy
read: abc:593;abc:49152-65535
which looked nothing like shreedhar's version in:
so I left it alone. But note this is Exchange 2010 not 2007...

But sort of per his suggestion I added:; to ValidPorts_AutoConfig_Exchange in the HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\RpcProxy registry key so it now reads:

To re-iterate the above, the entries were originally *not* there.

The connectivity test then worked. But after a little while the entries were gone and it failed again!

I then went back and added them to the ValidPorts key in HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\RpcProxy instead even though it didn't really look like the right place to add them, and the tests then failed on port 6004:

Testing the Name Service Provider Interface (NSPI) on the Exchange Mailbox server.
  An error occurred while testing the NSPI RPC endpoint.
   Test Steps
   Attempting to ping RPC endpoint 6004 (NSPI Proxy Interface) on server
  The attempt to ping the endpoint failed.
   Tell me more about this issue and how to resolve it
   Additional Details
  The RPC_S_SERVER_UNAVAILABLE error (0x6ba) was thrown by the RPC Runtime process.

So I went back and added; back to ValidPorts_AutoConfig_Exchange in the HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\RpcProxy.

And, again per shreedhar's suggestion in:

I changed HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeServiceHost\RpcHttpConfigurator\PeriodicPollingMinutes to 0 to turn off the RpcHttpConfigurator.

It's now working and apparently isn't automatically being disabled by the RpcHttpConfigurator.

I will run full checks now and confirm back shortly.

seworbyAuthor Commented:
Testing with Outlook confirms this fiix.
To clarify, I do not know if the hosts file entries were necessary for the fix, but certainly they didn't do any harm.

The fix was:

1. Change HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeServiceHost\RpcHttpConfigurator\PeriodicPollingMinutes to 0 to turn off the RpcHttpConfigurator.

2. Add; to ValidPorts_AutoConfig_Exchange in the HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\RpcProxy key.

Thanks for the help.

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seworbyAuthor Commented:
The solution was as detailed & in the link provided by Mark, but not the direct suggestion of changing the requestLimits maxAllowedContentLength="2147483648" setting and running the iisreset.
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