How to read emails on Global Address List of Exchange Server 2010?

Question

How to read all the emails of global address list of an Exchange Server 2010 using EWS Managed API? I could not find any methods in the API documentation.

Answer 1

In Exchange 2010 there are no direct methods to do this (there is in 2013) so you need to use a workaround. If you have less the 100 entries in the GAL you can just use the ResolveName operation and try resolving "SMTP:" which will return the top 100 entries. Another option is put all the emailaddresses you want to resolve in a Group and then use ExpandGroup http://msdn.microsoft.com/en-us/library/office/hh532557%28v=exchg.80%29.aspx . Otherwise just use LDAP http://www.infinitec.de/post/2011/10/25/Searching-the-Global-Address-List-C-Edition.aspx

Cheers Glen