[12-20 18:35:07]: [WARN] Failed to send a mail to [[email protected]]: [EmailException]: Sending the email to the following server failed : smtp-mail.outlook.com:587
[12-20 18:35:07]: org.apache.commons.mail.EmailException: Sending the email to the following server failed : smtp-mail.outlook.com:587
	at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1469)
	at org.apache.commons.mail.Email.send(Email.java:1496)
	at fr.xephi.authme.mail.SendMailSsl.sendEmail(SendMailSsl.java:103)
	at fr.xephi.authme.command.executable.authme.debug.TestEmailSender.sendTestEmail(TestEmailSender.java:120)
	at fr.xephi.authme.command.executable.authme.debug.TestEmailSender.execute(TestEmailSender.java:58)
	at fr.xephi.authme.command.executable.authme.debug.DebugCommand.executeSection(DebugCommand.java:66)
	at fr.xephi.authme.command.executable.authme.debug.DebugCommand.executeCommand(DebugCommand.java:40)
	at fr.xephi.authme.command.CommandHandler.executeCommand(CommandHandler.java:122)
	at fr.xephi.authme.command.CommandHandler.handleCommandResult(CommandHandler.java:81)
	at fr.xephi.authme.command.CommandHandler.processCommand(CommandHandler.java:68)
	at fr.xephi.authme.AuthMe.onCommand(AuthMe.java:356)
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:152)
	at org.bukkit.craftbukkit.v1_9_R2.CraftServer.dispatchCommand(CraftServer.java:665)
	at org.bukkit.craftbukkit.v1_9_R2.CraftServer.dispatchServerCommand(CraftServer.java:628)
	at net.minecraft.server.v1_9_R2.DedicatedServer.aL(DedicatedServer.java:441)
	at net.minecraft.server.v1_9_R2.DedicatedServer.D(DedicatedServer.java:404)
	at net.minecraft.server.v1_9_R2.MinecraftServer.C(MinecraftServer.java:723)
	at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:622)
	at java.lang.Thread.run(Unknown Source)
Caused by: javax.mail.MessagingException: Could not convert socket to TLS;
  nested exception is:
	javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
	at com.sun.mail.smtp.SMTPTransport.startTLS(SMTPTransport.java:2064)
	at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:724)
	at javax.mail.Service.connect(Service.java:388)
	at javax.mail.Service.connect(Service.java:246)
	at javax.mail.Service.connect(Service.java:195)
	at javax.mail.Transport.send0(Transport.java:254)
	at javax.mail.Transport.send(Transport.java:124)
	at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1459)
	... 19 more
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
	at sun.security.ssl.Alerts.getSSLException(Unknown Source)
	at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
	at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
	at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
	at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
	at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
	at sun.security.ssl.Handshaker.processLoop(Unknown Source)
	at sun.security.ssl.Handshaker.process_record(Unknown Source)
	at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
	at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
	at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
	at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
	at com.sun.mail.util.SocketFetcher.configureSSLSocket(SocketFetcher.java:598)
	at com.sun.mail.util.SocketFetcher.startTLS(SocketFetcher.java:525)
	at com.sun.mail.smtp.SMTPTransport.startTLS(SMTPTransport.java:2059)
	... 26 more
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
	at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
	at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
	at sun.security.validator.Validator.validate(Unknown Source)
	at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
	at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
	at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
	... 37 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
	at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
	at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
	at java.security.cert.CertPathBuilder.build(Unknown Source)
	... 43 more