Messages sent from Exchange 2007 to Non-Exchange Recipients through an Exchange 2003 Connector are NDRed by the first Hub/Transport Server

In a mixed Exchange 2007/2003 environment with a Connector to a Non-Exchange System on an Exchange 2003 Server you cannot send messages from Exchange 2007 to a recipient in the Non-Exchange System if the following two conditions are true: 1) the Connector contains an Address Space with an underscore (“_”) in it, like in the following example:…


How to "bulk disable" optimization for .NET assemblies using a Powershell script

Article http://msdn.microsoft.com/en-us/library/9dd8z24x(VS.80).aspx describes how to switch off optimization for a .NET assembly by creating an initialization (.ini) file. For example, if you want to switch off optimization for MyApp.exe, you need to create a file called MyApp.exe in the same folder as the application, with the following content: [.NET Framework Debugging Control]GenerateTrackingInfo=1AllowOptimize=0 If you need to…


How to control routing from your own routing agent

With the release of Microsoft Exchange Server 2007 Service Pack 1 you can programmatically override the default routing for message recipients on a per-recipient basis. This can be done by using the SetRoutingOverride method on the recipient for which you want to override the default routing. Let’s assume that you have an Exchange 2007 server…


CDO & usage of the meetingitem respond method

We recently had to troubleshoot an issue with CDO responses to meeting updates. It turns out that MS09-003 contained a code change from KB 913579. 913579 An update to a recurring meeting request that is sent from Exchange Server 2003 does not occur on the receiver sidehttp://support.microsoft.com/default.aspx?scid=kb;EN-US;913579 All Exchange 2003 Hot-fixes are cumulative! The purpose of…


Exchange 2007 SPAM & SPF

If you are trying to configure Exchange 2007 SPF and are seeing “TempError” for mails spoofed for your own domains, it is becuase Exchange 2007 uses the same query code for SPF as it does for other SMTP DNS queries. This leads to it thinking that if it matches it’s own IP to an MX…


Proxying CAS HTTP Cross Forest availability requests

Some of you may want to configure Cross Forest availability with your CAS Servers, but don’t necessarily want to open additional paths through your firewalls or networks for the CAS Servers to be able to talk directly with one another.   In this case, if you have an HTTP Web Proxy (obviously we like to…


How to suppress delivery- and read-receipts in Exchange 2007

For remote domains (Organization Configuration – Hub Transport) there are options for blocking delivery reports and non-delivery reports to remote domains. As described in the online help the option for blocking delivery reports does ONLY affect read receipts.There’s also no option for disabling relay notifications “Delivery to these recipients or distribution lists is complete, but…


What is an Extrace ?

So I wanted to Write a post, where I mentioned, that we used for troubleshooting extrace, but I scould not find any good public link for explaining , what is an Exchange Extrace. Actually I therefore reutilize an old Explanation for an OWA Extrace, which I sent several times to customers, but which was initially from…


The Kerberos Contraint Delegation fix and a 8197 Event for MSExchangeFBPublish

This is a blog entry for Exchange 2003, which is meanwhile in Extended Support (which means, that we will deliver non-security Hotfixes only to customers with a custom support agreement. In December 2006 we released a Hotfix for OWA Smart Card Authentication in Exchange 2003 over Exchange 2003 Front End Servers and ISA Server. It…