Checking CC in email

Question

Hi, I am doing a workout where in a textarea field, i want to
enter the multiple emails followed by the ; sign or say when we
enter the CC or BCC field.
Problem here is i cannot validate the emails entered in the
BCC or CC fields. I want that user enter email like [email protected]
users as you know enter fake like abc, hhhd,, dgdhad etc etc
you know.
so plz follow and show me any linkor any idea.

Answer 1

I did one of those once.
form page
<th align="left">To<br />(complete e-mail
addresses,<br />one per line)</th>
<td colspan="2" align="left">
<cftextarea name="mailto" value="#mailto#" rows="5"
cols="30"
required="yes" message="Please Enter at Least One Recipient"
/>
</td>
on the action page
<cfscript>
mail can go to multiple addressees. make a comma delimted
list from the form text area, as long as the list element is a
valid e-mail address
// first, replace linefeeds and carraige returns with commas
mailtolist = Replace(form.mailto, chr(10), ",", "all");
// just carraige returns
mailtolist = Replace(mailtolist, chr(13), ",", "all");
// and spaces
mailtolist = Replace(mailtolist, " ", ",", "all");
// and semi colons
mailtolist = Replace(mailtolist, ";", ",", "all");
// multi commas to single commas
mailtolist = Replace(mailtolist, ",,", ",", "all");
// space comma to comma
mailtolist = Replace(mailtolist, " ,", ",", "all");
// comma space to comma
mailtolist = Replace(mailtolist, ", ", ",", "all");
// trailing comma if necessary
while (right(mailtolist, 1) is ",") {
mailtolist = left(mailtolist, len(mailtolist) - 1);
// any remaining multiple commas
while (mailtolist contains ",,") {
mailtolist = replace(mailtolist, ",,", ",", "all");
goodlist = "";
badlist = "";
for (i = 1; i lte listlen(mailtolist); i = i + 1) {
ThisAddress = ListGetAt(mailtolist, i);
if (isValid("email", ThisAddress))
goodlist = ListAppend(goodlist, ThisAddress);
else
badlist = ListAppend(badlist, ThisAddress);
} // loop
</cfscript>
and then I do some stuff with the good and bad lists. The
actual page doesn't send the mail immediately, the user reviews the
content first, and if there is a bad list, he can do something
about it.