Smarter Mail problem

On my site with you I am using Smarter Mail to send to users a registration confirmation when they register as members with our forum, using the jitbit forum software.
This is a new installation. The email notification works, if the receiving email adress is our own smarter mail user, i.e. [email protected].However, if I try to send the email to my hotmail account, nothing arrives. Here is the section in the web.config file:

<add key="MailNotificationsEnabled" value="true"/>
<add key="MailServer" value="smtp.the-net-realtor.com"/>
<add key="MailServerPort" value="25"/>
<add key="MailServerLogin" value=""/>
<add key="MailServerPassword" value=""/>
<add key="MailFromAddress" value="[email protected]"/>
<add key="MailUseSSL" value="false"/>

What am I doing wrong?

 

Solved the problem - thank