For the past two weeks I was up against MAPI. I must admit, its a amazing piece of work and liked it, the more I delved into it.

Let me delve a bit more into the specifics of the problem a bit more.

We have a piece of software, and it is used to synch up contacts across Exchange and a custom application using Mapi Server Client. Now this works fine if the Systems are Exchange Server 2003 on Win2k3, and Our Application is on Windows 2008. But the problem started appearing when we tried the same thing out when the combination is Exchange 2007 on Win2k8 and our application on Win 2k8. 

I dug deep and I resorted to aprroach, the only guy who I knew blogs about MAPI - SGriffin. And he did respond and put us on the right track.

If you face same kind of problems that we faced, the things that you need to check is:

• There is a issue with with IPv6 - Click Here and Click Here
• Ensure that you create the Service Account properly - Click Here
• Make sure your user with whom you created your profile is a member of "Exchange Organization Administrator"
• Ensure you download and install the latest Exchange MAPI server client