1. Make sure that php -m module "imap" is present.
If you come across the error in apache error log(/usr/local/apache/logs/error_log) as,
[Thu Mar 06 12:13:53 2014] [error] [client IP] sh: /usr/local/bin/sendmail-logger: No such file or directory
Then comment the PHP.ini directive,
=-=-
/usr/local/bin/sendmail-logger
=-=--=
Done
If you come across the error in apache error log(/usr/local/apache/logs/error_log) as,
[Thu Mar 06 12:13:53 2014] [error] [client IP] sh: /usr/local/bin/sendmail-logger: No such file or directory
Then comment the PHP.ini directive,
=-=-
/usr/local/bin/sendmail-logger
=-=--=
Done