I found the issue to be related to the container where the service account was located.  It appears it was too deep into AD tree directory, so it was not authenticate properly.  Once I moved it up, it worked.  Thanks for your help!!

Thanks ... I think the issue is with the Web Auth configuration, since I am not getting any binding error.  I am going to have the network admin double the config, since I saw noticed some funky things.  I will write back once we figure out what the ...

Thanks ...  I continue to get the following error every time I attempt to authenticate.  Is it complaining about the bind account or my credentials? Apr 06 17:49:17.653: [ERROR] ews.c 871: ewsRun: Bad State - should be suspended: 0x0*ewmwebWebauth1: ...

Hello bbiandov, Just wondering if you are still able to share the process you followed for getting the sMAccountName to work.Thanks, Alberto

Thanks for your reply ...  If you could please share the steps on how you got it working with sMAccountName, not really flexible but at least we can get it going. Thanks again.