When I write an email template to use it for a campaign, sugarCRM deletes part of the email text.

I wrote a template like this:

<link rel="Stylesheet" type="text/css" href="http://www.datacheck.it/pl.css" />
<link rel="Stylesheet" type="text/css" href="http://www.datacheck.it/customcss/.css" />
<title></title>
<link href="http://www.datacheck.it/pl.css" type="text/css" rel="Stylesheet" />
<link href="http://www.datacheck.it/customcss/.css" type="text/css" rel="Stylesheet" />
<table width="100%" cellspacing="0" cellpadding="0" border="0" align="" text-align:="" style="" id="table1" summary="">
<tbody>
<tr>
<td height="150" style="text-align: center;"> <img src="http://www.datacheck.it/images/company4.jpg" alt="" /> </td>
</tr>
</tbody>
</table>
<table cellspacing="0" cellpadding="0" border="0" align="center" text-align:="" id="table1">
<f><span style="color: rgb(192, 192, 192);"><span style="color: rgb(153, 153, 153);"><br />I nostri uffici rimarranno chiusi dal giorno&nbsp;</span> </span><span style="">6 </span></f><f size="4"><span style="color: rgb(192, 192, 192);"><span style="color: rgb(153, 153, 153);">al</span></span></f><f size="4"><span style=""> 17 agosto 2007</span></f><f size="4"><span style="color: rgb(192, 192, 192);"><span style="color: rgb(153, 153, 153);">, riapriremo luned&igrave; 20 agosto. </span></span></f>
<tbody>
<tr>
<td> <br /> <f size="1"><font size="1"> Hai ricevuto questa newsletter perch&egrave; i tuoi dati sono registrati nell'anagrafica della nostra societ&agrave;,&nbsp;<a href="{remove_me}">clicca qui </a> se non desideri ricevere queste comunicazioni</font> </f> </td>
</tr>
</tbody>
</table>

but when I save it, sugarcrm delete each occurrences of "datacheck" from the text, so external links become "www..it" instead of "www.datacheck.it" and the mail become unusable.

Any body can help ?

I'm using:

Sugar Version: 4.5.1e (just updated)
Deployment Option: On-Site
Database Version: MySQL 4.1
Webserver Version: Apache 2.0.x
Operating System: Linux centos