Coldfusion server side email validation

<cfoutput>
<cfset errors = "">
<cfif isDefined("Form.FIELDNAMES") >
<!--- validate formfields --->
<!--- First validate if form.lemail is empty --->
<cfif NOT Len(Trim(Form.lEmail))>
<cfset errors = ListAppend(errors,"Please write your email!","|")>
<cfset lEmailError = 1>
<cfelseif NOT IsValid("email", Form.lEmail)>
<cfset errors = ListAppend(errors,"Please write correct email format!","|")>
<cfset lEmailError = 1>
</cfif>
<!--- the rest of the logincode --->
.......
<!--- output errors --->
<CFIF errors NEQ "">
<CFLOOP list="#errors#" index="the_error" delimiters="|">
<li>#the_error#</li>
</CFLOOP>
<br/>
</CFIF>
</CFIF>


<form method="post" action="#CGI.SCRIPT_NAME#" name="loginform">
Email: <input type = "text" name="lemail" value="" class="textfieldLogin" /><br/>
Password: <input name="luserpassword" type="password" class="textfieldLogin" value=""/><br/>
<input type="submit" name="Logon" value="Logon" />
</form>
</cfoutput>