Thanks for your Reply.
I checked my server, the Blazex.com is an Accepted Authoritative Domain. Have a look please: http://cid-31ba948d0da4d57e.skydrive...tiveDomain.png¬*and my MS Outlook have SP 2. I am still missing something. Give me some time, I will do some troubleshooting through Command Shell and I will provide you result. I hope that will help me to understand the problem.
Thanks and Regars