Technical issues in exchange 2013 that we must know

Outlook is using GUID not Server name

Outlook clients no longer connect to a server FQDN as they have done in all previous versions of Exchange. Outlook uses Autodiscover to create a new connection point comprised of mailbox GUID, @ symbol, and the domain portion of the user’s primary SMTP address.

Ex: MailboxGuid @ SMTP Domain (DomainName)

This change has helped to get rid of the message “Your administrator has made a change to your mailbox. Please restart

 It is used in conjunction with AutoDiscover to allow seemless moves of servers for future and current (if you’re moving mailboxes and the like)

Ref: http://windowsitpro.com/exchange-server-2013/exchange-server-2013-transition-rpc-http

http://technet.microsoft.com/en-us/library/dn635177(v=exchg.150).aspx

http://windowsitpro.com/blog/exchange-2013-mapi-over-http