Unexpected exception

[jsdevelopcom]

Hi, I`m tying to run your app in IntelliJ IDEA 15 & have some problems:

RuntimeException: smtp.host needs to be set in application.conf in order to use this plugin (or set smtp.mock to true)

No source available, here is the exception stack trace:
->java.lang.RuntimeException: smtp.host needs to be set in application.conf in order to use this plugin (or set smtp.mock to true)
com.typesafe.plugin.CommonsMailerPlugin$$anonfun$4.apply(MailerPlugin.scala:329)
com.typesafe.plugin.CommonsMailerPlugin$$anonfun$4.apply(MailerPlugin.scala:329)
scala.Option.getOrElse(Option.scala:120)
com.typesafe.plugin.CommonsMailerPlugin.mailerInstance$lzycompute(MailerPlugin.scala:329)
com.typesafe.plugin.CommonsMailerPlugin.mailerInstance(MailerPlugin.scala:326)
com.typesafe.plugin.CommonsMailerPlugin.onStart(MailerPlugin.scala:343)
play.api.Play$$anonfun$start$1$$anonfun$apply$mcV$sp$1.apply(Play.scala:91)
play.api.Play$$anonfun$start$1$$anonfun$apply$mcV$sp$1.apply(Play.scala:91)
scala.collection.immutable.List.foreach(List.scala:318)
play.api.Play$$anonfun$start$1.apply$mcV$sp(Play.scala:91)
play.api.Play$$anonfun$start$1.apply(Play.scala:91)
play.api.Play$$anonfun$start$1.apply(Play.scala:91)
play.utils.Threads$.withContextClassLoader(Threads.scala:21)
play.api.Play$.start(Play.scala:90)
play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(ApplicationProvider.scala:142)
play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(ApplicationProvider.scala:115)
scala.Option.map(Option.scala:145)
play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$1.apply(ApplicationProvider.scala:115)
play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$1.apply(ApplicationProvider.scala:113)
scala.util.Success.flatMap(Try.scala:200)
play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvider.scala:113)
play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvider.scala:105)
scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
scala.concurrent.forkjoin.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java:1361)
scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)