To Disable the sendmail Process
The sendmail process can conflict with Java Enterprise System communications
services. Disable it before you install Java Enterprise System.
Steps
- 
Run the command to stop the sendmail process:
 
/etc/init.d/sendmail stop 
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- 
Run the command to disable sendmail startup:
 
mv /etc/init.d/sendmail /etc/init.d/sendmail.disabled 
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