You have not given us enough information to actually assist you. Please
help us to help you by reading and following the posting guidelines in
this thread: Please read before requesting assistance.Have you configured SMTP in your php.ini?What is this set to?Admin panel -> Settings -> Emails -> Default Outgoing EmailWhat are the settings you are using in: Admin panel -> Emails -> your emails. (more speifically the SMTP Settings section)Exchange... have you setup a receive connector? I'm not sure where it is in the version your using but it used to be: Exchange Management Console -> Server Configuration -> Hub Transport -> Receive Connectors.Lastly, this site has a pretty simple sript that I some times use to test SMTP. Maybe it can help you work our whats going wrong.http://www.rackspace.com/knowledge_center/article/how-do-i-test-php-smtp-functionality