OutlookAnywhere - MAPI Mail Store endpoint - attemped to ping failed

Hi,

I have a DC (Server 2012 R2) setup, with RDS and EXCHANGE (with MS Exchange 2013 SP1) as virtual servers.

RDS is facing the internet (mail.domain.com @ Port 443), and is using ARR with URL Rewrite for OWA, EWS, Autodiscover, ActiveSync and ECP, rewriting all requests to EXCHANGE.

When I run tests on https://testconnectivity.microsoft.com for Outlook connectivity, it fails saying:

Attempting to ping the MAPI Mail Store endpoint with identity: 86b551b0-c6d5-4ec4-8f1b-66e01b29beeb@domain.com:6001.
       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.
Elapsed Time: 3310 ms.

Telnet from DC or RDS into EXCHANGE on port 6001 works fine.

However, I am concerned that there may be two things preventing this from working:

1) 86b551b0-c6d5-4ec4-8f1b-66e01b29beeb@domain.com:6001 <-- shouldn't this be trying to connect to mail.domain.com:6001 and not domain.com?

2) Even if there is nothing wrong with the above, I would assume it is using RDS's standard 443 port, and trying to ping 6001 on RDS itself, since as far as I know, URL Rewrite has no rules to forward port requests on to exchange.

Am I right in my assumptions?
Saleem BegAsked:
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Simon Butler (Sembee)ConsultantCommented:
This:
86b551b0-c6d5-4ec4-8f1b-66e01b29beeb@domain.com:6001

is normal on Exchange 2013. All end users have a unique end point, so that is what you will see for the mailbox. Not the real name of the server, or the SSL name.

As for the second point - you are probably not getting answers because no one has done it.
ARR is still a new technology, I haven't deployed it anywhere myself. Regular RDS and Exchange OWA will paly well, but I don't know if that applies with ARR.

if it is affecting users, then one of them will have to go to get connectivity back.
Or you will have to call Microsoft support.

Simon.
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Saleem BegAuthor Commented:
Hi Simon,

Thanks for the response.

ARR may explain the issue with Outlook Connectivity from the internet. But it should surely connect internally directly to 'exchange' as this is what I specified as it's internal name?
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Simon Butler (Sembee)ConsultantCommented:
No.
The behaviour is the same both internally and externally. Everything connects to the unique end point.
The server name isn't used by any of the clients. They have the unique end point and then FQDN configured for Outlook Anywhere.

Simon.
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Saleem BegAuthor Commented:
I managed to fix this myself.

In ARR I had rewritten URL for ECP, OWA, etc, etc but not RCP, and hence it was pinging the RCP of ARR server and not exchange.
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Saleem BegAuthor Commented:
Because it worked
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SainaaCommented:
Hi Saleem Beg,

Can you share your rewrite rule for RPC? I'm having same issue.
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