After the Update of Maven Integration plugin Version 2.0 this error has occured:

Build step 'Invoke top-level Maven targets' marked build as failure
12:50:08 Build step 'Groovy Postbuild' marked build as failure
12:50:08 Sending e-mails to: klaus.renner@ergodirekt.de null
12:50:08 ERROR: 250 2.0.0 Ok: queued as 740A58A29E
12:50:08
12:50:08 com.sun.mail.smtp.SMTPSendFailedException: 250 2.0.0 Ok: queued as 740A58A29E
12:50:08 ;
12:50:08 nested exception is:
12:50:08 com.sun.mail.smtp.SMTPAddressFailedException: 550 5.1.1 <null>: Recipient address rejected: User unknown in local recipient table
12:50:08
12:50:08 at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1112)
12:50:08 at javax.mail.Transport.send0(Transport.java:195)
12:50:08 at javax.mail.Transport.send(Transport.java:124)
12:50:08 at hudson.tasks.MailSender.execute(MailSender.java:116)
12:50:08 at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.cleanUp(MavenModuleSetBuild.java:1038)
12:50:08 at hudson.model.Run.execute(Run.java:1710)
12:50:08 at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:509)
12:50:08 at hudson.model.ResourceController.execute(ResourceController.java:88)
12:50:08 at hudson.model.Executor.run(Executor.java:230)
12:50:08 Caused by: com.sun.mail.smtp.SMTPAddressFailedException: 550 5.1.1 <null>: Recipient address rejected: User unknown in local recipient table
12:50:08
12:50:08 at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1686)
12:50:08 at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1098)
12:50:08 ... 8 more
12:50:08 Finished: FAILURE