title: com.sun.mail.smtp.SMTPSendFailedException: 452 4.4.5 Insufficient disk space; try again later
body: <p>I am trying to send email through <strong>org.apache.commons.mail</strong> api in Java under Linux Centos.</p>
  
  <p>I was able to send emails, but now suddenly when I am trying to send email I am getting the error - </p>
  
  <pre><code>com.sun.mail.smtp.SMTPSendFailedException: 452 4.4.5 Insufficient disk space; try again later
  at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2114)
  at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:1618)
  at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1119)
  at javax.mail.Transport.send0(Transport.java:195)
  at javax.mail.Transport.send(Transport.java:124)
  </code></pre>
  
  <p>I am not understanding why this is happening. Can anybody please help me to resolve this problem.</p>
  
  <p>Thank you</p>