title: Client does not have permissions to send as this sender (office 365, grails)
body: <p>I am continuously receiving following error message while trying to configure grails mail plugin (<a href="https://grails.org/plugin/mail" rel="noreferrer">https://grails.org/plugin/mail</a>) for grails spring security plugin. </p>
  
  <p>Here is my configuration looks so far,</p>
  
  <pre>
  
      grails {
          mail {
              host = "smtp.office365.com"
              port = 587
              username = "info@email.com"
              password = "password"
              props = ["mail.smtp.starttls.enable":"true",
                       "mail.smtp.port":"587"]
          }
      }
  
      grails.mail.default.from = "info@email.com"
  
  </pre>
  
  <p>And here is my stack-trace.</p>
  
  <pre>
  
      .......| Error 2015-04-17 11:59:39,184 [http-bio-8080-exec-8] ERROR errors.GrailsExceptionResolver  - MailSendException occurred when processing request: [POST] /retouch/register/forgotPassword - parameters:
      username: customer
      Failed messages: com.sun.mail.smtp.SMTPSendFailedException: 550 5.7.60 SMTP; Client does not have permissions to send as this sender
      . Stacktrace follows:
      Message: Failed messages: com.sun.mail.smtp.SMTPSendFailedException: 550 5.7.60 SMTP; Client does not have permissions to send as this sender
          Line | Method
      ->>  131 | sendMessage    in grails.plugin.mail.MailMessageBuilder
      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
      |     55 | sendMail       in grails.plugin.mail.MailService
      |     59 | sendMail . . . in     ''
      |    156 | forgotPassword in grails.plugin.springsecurity.ui.RegisterController
      |    198 | doFilter . . . in grails.plugin.cache.web.filter.PageFragmentCachingFilter
      |     63 | doFilter       in grails.plugin.cache.web.filter.AbstractFilter
      |     53 | doFilter . . . in grails.plugin.springsecurity.web.filter.GrailsAnonymousAuthenticationFilter
      |     49 | doFilter       in grails.plugin.springsecurity.web.authentication.RequestHolderAuthenticationFilter
      |     82 | doFilter . . . in grails.plugin.springsecurity.web.authentication.logout.MutableLogoutFilter
      |   1145 | runWorker      in java.util.concurrent.ThreadPoolExecutor
      |    615 | run . . . . .  in java.util.concurrent.ThreadPoolExecutor$Worker
      ^    745 | run            in java.lang.Thread
  
  </pre>
  
  <p>Note: Problem is only find in Grails spring security plugin.</p>