Hello,

A potentially dangerous Request.Form value was detected from the client (ctl00$cntBody$ctlEditView$txtDESCRIPTION="<p>fdjadfjaj</p>
<p...").

Hello I'm getting this application error when I there is a line break in the body of the email message.

So if type :

Hello

hello

hello

I would get that error.  Is there a setting where you can do line breaks.  Do you have any idea what would cause this error. Thanks.

You should disable validation in the Web.config.  I believe that we do this on all new installations.

<pages enableSessionState="true" enableEventValidation="false" validateRequest="false">