diff --git a/bin/crontab-ui-mailer.js b/bin/crontab-ui-mailer.js
index 3dceedc..89ccfb0 100755
--- a/bin/crontab-ui-mailer.js
+++ b/bin/crontab-ui-mailer.js
@@ -5,7 +5,16 @@ var crontab = require("../crontab.js");
 var nodemailer = require('nodemailer');
 
 crontab.get_crontab(process.argv[process.argv.length -1 -2], function(job){
-  var transporter = nodemailer.createTransport(job.mailing.transporterStr);
+  if (job.mailing.transporterStr == 'sendmail') { // allow sending mail with Postfix
+    var transporter = nodemailer.createTransport({
+      sendmail: true,
+      newline: 'unix',
+      path: '/usr/sbin/sendmail',
+      secure: true
+    });
+  } else {
+    var transporter = nodemailer.createTransport(job.mailing.transporterStr);
+  }
   var mailOptions = job.mailing.mailOptions;
 
   mailOptions.attachments = [{filename: "stdout.txt", path: process.argv[process.argv.length -1 -1]}, {filename: "stderr.txt", path: process.argv[process.argv.length -1]}];