return mail analysis

and if I add a scheduler task manually with phpmyadmin with the class

tx_directmailreturnscheduler_returnAnalysis

scheduler says:

Class tx_directmailreturnscheduler_returnAnalysis of the registered task could not be found. You should re-install the extension that provided it or simply delete this task.
?

The Problem are uppercase letters in classnames.

Solution:

Change line 5 in ext_autoload.php to:
'tx_directmailreturnscheduler_returnanalysis' => t3lib_extMgm::extPath('directmail_return_scheduler') . 'tasks/class.tx_directmailreturnscheduler_returnanalysis.php',

Change line 9 in ext_localconf.php to:
$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['scheduler']['tasks']['tx_directmailreturnscheduler_returnanalysis'] = array(

Change line 41 in tasks/class.tx_directmailreturnscheduler_returnanalysis.php to:
class tx_directmailreturnscheduler_returnanalysis extends tx_scheduler_Task {

OK
now I can create the Scheduler task.
and execute it.
Thanks.

BUT allthough there are hundreds of returned mails in the IMAP Mailbox
nothing happens in the Statistic Tool of direct_mail.

Any hints?
best
stefan