One of my customer updated that whenever they try to make the remote Exchange Web Service (EWS) call from his C#.Net 2008 application (VS.Net 2008 - .Net Framework 3.x), he gets the following error: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel I had a detailed look at their application code. // Create the Exchange Service Binding ExchangeServiceBinding esb = new ExchangeServiceBinding();   // Add its relevant Credentials like user

With the continuation of the previous blogpost , today we’re going to see how we can use Microsoft Office Outlook Web Access or the Exchange Management Shell to configure language settings for Outlook Web Access in Microsoft Exchange Server 2007. Microsoft have provided various options to customize the OWA pages, contents/images/themes in a simpler way. As a part of that, we cam make sure that we can do the language setting for OWA, which determines the language of the Outlook Web Access logon page

Per the article , the following recommendations will help you use the classes contained in System.Net to their best advantage: Use WebRequest and WebResponse whenever possible instead of type casting to descendant classes. Applications that use WebRequest and WebResponse can take advantage of new Internet protocols without needing extensive code changes. When writing ASP.NET applications that run on a server using the System.Net classes, it is often better, from a performance standpoint, to use the

Automation using # imports ? As you know, Automation (OLE Automation), the technology that allows you to take advantage of an existing program's functionality and incorporate it into your own applications. This technology can greatly simplify and speed up your development. # imports: In C/C++ preprocessor, we have a directive called "#imports" is available. Using this #import directive allows you to automatically "import" the type information contained in the component type library

One of my customer uses MS Windows XP SP3 & Outlook 2007 reported that whenever he tries to connect to the Internet service provider (ISP) to retrieve messages from POP3, his earlier entered password is not retained. He was pretty sure that  he chose to save the password. Also he tried to entering the correct password again does not resolve the issue. This issue occurs for one or more of the following reasons: • You have a corrupted Outlook profile or a corrupted Outlook Express identity.

Couple of customers reported that he face a strange error with Outlook 2007/2003: When you start any of the Microsoft Office 2007 or Microsoft Office 2003 programs, you may receive an error message that is similar to the following error message: Your system is low on virtual memory. To ensure that Windows runs properly, increase the size of your virtual memory paging file. For more information, see Help. If you click OK , you may receive the following error message: Your system is low on virtual

Do you know, that using .NET Framework 3.5 SP1 hereafter we can launch our managed code from a network share. I read this wonderful blog posted by Vance Morrison , who is an Architect for .Net runtime team. Certainly i believe this will relive lot of deployment related pain specially...

Do you know the support that is available for applications that use the Web Distributed Authoring and Versioning (WebDAV) protocol to access Microsoft Exchange 2000 Server or Microsoft Exchange Server 2003 ?   What is supported? Microsoft support the use of the WebDAV protocol for the following items: •Non-recurring appointments •Contacts in Microsoft Outlook that you create or modify •Folders that you create in Outlook and in Exchange 2000 Server or Exchange Server 2003 •E-mail

Do you know why MAPI is not suitable for HTML messages? MAPI 1.0 was written before HTML mail was developed and does not reliably support the creation of HTML-formatted messages. As you know, MAPI 1.0 is the version supported by all versions of Microsoft Exchange through version 5.5 (and all Service Packs). This includes the following subordinate technologies: •Simple MAPI •Extended MAPI •OLE Messaging •Active Messaging (Collaboration Data Objects (CDO) 1.1) •CDO versions 1.2 and 1.21 •MAPI controls

Event sink registration - Best practices It's must to know when we try to register the event sink in Excahge environment. The following guidelines are helpful when you create event registration items: The scope of an event sink is restricted to a single store. Event registration items are automatically hidden when saved. To be instantiated by Exchange, event sinks in a dynamic-link library (DLL) must have a surrogate host defined. Wrapping the DLL in a COM+ Application assigns the surrogate host