Dominic Sayers' is_email() Java integration w/ColdFusion. Adds DNS/MX check. Better validation than ColdFusion's isValid() or any regex.

isEmail_java.cfm

<cfscript>
/* Copy IsEMail.jar to java path. Download from https://code.google.com/p/isemail/downloads/list */
/* Comparison of methods available at https://gamesover2600.tumblr.com/post/152034073124/clientserver-side-email-validation-compared */
emails = ["test@test.com",
	"valid_but_no_mx@fake-domain.com",
	"valid_but_no_dns@fake-domain2.com",
	"""much.more unusual""@example.com",
	"john.smith@example.com(comment)",
	"""first\last""@iana.org",
	"first.last@com",
	"""Joe.\Blow""@iana.org",
	"foobar@192.168.0.1",
	"first.last@-xample.com",
	"first.last@exampl-.com",
	"first.last@x234567890123456789012345678901234567890123456789012345678901234.iana.org"];

/* Set DNS server to prevent ColdFusion error:
   javax.naming.ConfigurationException: localhost:2932 is not a valid DNS pseudo-URL */
sys = createObject("java", "java.lang.System");
sys.setProperty("java.naming.provider.url","dns:/YOUR_DNS_SERVER");

isEmailObj = CreateObject("java", "com.dominicsayers.isemail.IsEMail");
check_DNS = true;
responseLabels = ListToArray("Email,isValid,Status,Rule ID,Rule Name,SMTP SMTP Code");

function checkEmail(e, useDNS){
	var check = isEmailObj.is_email_verbose(e, Check_DNS);
	var response =  structNew();
	response["Email"] = e;
	response["isValid"] = check.getState().isValid();
	response["Status"] = check.getStatusTextExplanatory();
	response["Rule ID"] = check.getId();
	response["Rule Name"] = check.getConstantName();
	response["SMTP"] = "N/A";
	response["SMTP Code"] = "N/A";
	if (useDNS){
		response["SMTP"] = check.getSmtpCode();
		response["SMTP Code"] = check.getSmtpCodeText();
	}
	return response;
}

for(i=1; i LTE ArrayLen(emails); i=i+1){
	writeoutput('<h2>#emails[i]#</h2>');
	temp = checkEmail(emails[i], check_DNS);
	for(a=1; a LTE ArrayLen(responseLabels); a=a+1){
		if (StructKeyExists(temp, responseLabels[a])){
			writeoutput('<div><b>#responseLabels[a]#:</b> #Temp[responseLabels[a]]#</div>');
		}
	}
	writeoutput('<hr>');
}
</cfscript>

I tried a local dns server and google public but it doesn't seem to find any mx records for any domain name.

Any ideas?

sys.setProperty("java.naming.provider.url","dns:/8.8.8.8");

Example:
Email: randyj@gmail.com
isValid: YES
Status: Couldn't find an MX-record or an A-record for this domain
Rule ID: 73
Rule Name: ISEMAIL_DOMAINNOTFOUND
Error: [ISEMAIL_ERROR] Address is invalid