User registration - sending mails

Hi all,

I have a problem with sending mails out of the user registration.
phpmailer is installed correctly, I tried with the "contactowner" module to send mails to me - everything works fine!

Get the following error in the logs:

2012-08-08 12:32:17 +02:00 --- error: Exception [ 0 ]: @todo SEND_MAIL_FAILED
/var/www/html/schnee2700/modules/phpmailer/libraries/Sendmail.php [ 90 ]
#0 /var/www/html/schnee2700/modules/register/helpers/register.php(103): Sendmail_Core->send()
#1 /var/www/html/schnee2700/modules/register/helpers/register.php(50): register_Core::_sendemail('philip@h...', Object(SafeString), Object(View))
#2 /var/www/html/schnee2700/modules/register/helpers/register.php(91): register_Core::send_user_created_confirmation(Object(Pending_user_Model), '4f02a89ab25a0d3...')
#3 /var/www/html/schnee2700/modules/register/controllers/register.php(42): register_Core::create_new_user(4)
#4 [internal function]: register_Controller->handler()
#5 /var/www/html/schnee2700/system/core/Kohana.php(331): ReflectionMethod->invokeArgs(Object(register_Controller), Array)
#6 [internal function]: Kohana_Core::instance(NULL)
#7 /var/www/html/schnee2700/system/core/Event.php(208): call_user_func_array(Array, Array)
#8 /var/www/html/schnee2700/application/Bootstrap.php(67): Event_Core::run('system.execute')
#9 /var/www/html/schnee2700/index.php(113): require('/var/www/html/s...')
#10 {main}

I have gallery version 3.0.4 with the latest modules installed.

Thanks for help, philip