title: Oracle error on linux server when sending emails using sendmail
body: <p>The ORACLE application is trying to send email using send mail running on a REDHAT LINUX server and the following error comes up, I don't have access to the code being a LINUX ADMIN and the application team sits on a remote location, just want to know what this error means exactly. </p>
  
  <p><strong>> ORA-29279: SMTP permanent error: 503 5.0.0 Need RCPT (recipient)</strong></p>
  
  <p>When I check the mail Log files around the same time, I see the line below, kindly guide me through to solve this issue.     </p>
  
  <p><strong>sendmail[1812]: r6P80BgT001812: lost input channel from localhost.localdomain [127.0.0.1] to Daemon0 after data</strong></p>