Tag Archives: MapiHttp

MapiHttp in Exchange 2013 SP1

Microsoft introduced a new protocol in Exchange Server 2013 SP1 called MapiHttp (codename Alchemy). This is an Office 365 development to replace the traditional RPC/HTTPS protocol used in Outlook Anywhere.

Outlook Anywhere was developed in the Exchange 2003 timeframe to use Outlook 2003 over the Internet. Outlook is using RPC to communicate with the Exchange server, and the RPC traffic is encapsulated in HTTPS packets. To achieve this an RPC proxy is used. The ‘problem’ here is that this is not too stable, especially not when you have a flaky Internet connection. RPC is never designed to work with network connections like this. Besides this, the RPC proxy is a Windows components and thus a responsibility of the Windows team at Microsoft and not the Exchange team. So if problems arise, the Windows team has to solve this and the only thing the Exchange team can do is wait. Not a desirable solution.

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Exchange 2013 Service Pack 1

On February 25, 2014 Microsoft released Exchange 2013 SP1, an interesting upgrade in the Exchange 2013 program. Besides SP1 new UM Language Packs have been released as well. For more detailed information please check the SP1 release notes. At the same time Microsoft has released Update Rollup 5 for Exchange 2010 SP3 and Update Rollup 13 for Exchange 2007 SP3.

Looking at the Cumulative Updates with Exchange 2013, SP1 is identical to CU4. One reason for releasing a Service Packs is the support lifecycle. Major releases and Service Packs of a Microsoft product are included in the support lifecycle, Cumulative Updates are not.

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