4

I am running Exchange 2013 on Windows Server 2012 R2.

When I add my exchange account to Outlook, it seems to work perfectly (sending/receiving email, syncing everything), but when I open the account settings it has the following set as the Server:

ffff9c55-a9e0-47e9-8779-dbf73af18dd7@domain.com

I would have expects this to be: mail.domain.com since this is the DNS A record pointing to the IP of my server. Where is it getting this server name?

5

This is the new RPC proxy endpoint. There is more information in this blog post on the microsoft website. Just a short quote from the article:

We no longer use a FQDN for the RPC endpoint. Instead we now use a GUID. The mailbox GUID, to be precise (along with a domain suffix to support multi-tenant scenarios).

There is another article which might be of interest for you.

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  • Interesting - I'm reading through the articles (it is just slightly over my head but I am following it for the most part) - so how do they map the GUID to the IP? Is there some sort of centralized GUID DNS service? – William Nov 10 '13 at 17:44
  • I think your answer is in the blog post in the section "Outlook Connectivity" after the image. There is no direct mapping to the IP. It is more a mapping to the mailbox store where the mailbox resides. So you need to find out where the mailbox is and then you have the IP. – Raffael Luthiger Nov 10 '13 at 23:28

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