the message text you posted has a lot of MS Word proprietary code in it, it also uses the font tag which is not supported by many email clients.
this would be more correct coding for the message:
<p>
Test text below
</p>
<p>
<span style="color: #ff0000;font-family: Tahoma, serifSansSerifMonospace;">Here is the message that has just been posted:</span>
</p>
<p>
<span style="color: #000000;font-family: Tahoma, serifSansSerifMonospace;">***************</span>
</p>
<p>
<span style="color: #000000;font-family: Tahoma, serifSansSerifMonospace;"><em>using styles in emails is not the same as using styles in a web page.</em></span>
</p>
<p>
<span style="color: #000000;font-family: Tahoma, serifSansSerifMonospace;"> </span>
</p>
<p>
<span style="color: #000000;font-family: Tahoma, serifSansSerifMonospace;">before you send the message, switch HTML Editor to source mode, send the source code for the message and I will be able to tell you what is wrong.
</span></p>