I am able to send group emails from a search (less than 50), am able to send a test email from the Administer / System Settings / Outbound Email, but when I try to do a CiviMail test, I get Error in call to Mailing_send_test : mail() returned failure.
What should I look for?
I'm running CiviCRM 4.6.4 with Drupal 7.3.8 and here's the contents of the ConfigAndLog file after trying to send mail with the Debug and Backtrace on
Jul 09 08:29:28 [info] $backTrace = #0 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/CRM/Core/Error.php(894): CRM_Core_Error::backtrace("backTrace", TRUE)
#1 [internal function](): CRM_Core_Error::exceptionHandler(Object(PEAR_Error))
#2 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/packages/PEAR.php(931): call_user_func((Array:2), Object(PEAR_Error))
#3 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/packages/PEAR.php(566): PEAR_Error->PEAR_Error("mail() returned failure", NULL, 16, (Array:2), NULL)
#4 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/packages/Mail/mail.php(175): PEAR->raiseError("mail() returned failure")
#5 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/CRM/Mailing/BAO/MailingJob.php(707): Mail_mail->send("\"Mr. Matt Burkhardt\" <mlb@imparisystems.com>", (Array:11), "--=_fd576d140be170d71ee812779cea380f\nContent-Transfer-Encoding: 8bit\nConten...", "26")
#6 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/CRM/Mailing/BAO/MailingJob.php(611): CRM_Mailing_BAO_MailingJob->deliverGroup((Array:1), Object(CRM_Mailing_BAO_Mailing), Object(Mail_mail), "", (Array:0))
#7 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/CRM/Mailing/BAO/MailingJob.php(198): CRM_Mailing_BAO_MailingJob->deliver(Object(Mail_mail), (Array:12))
#8 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/api/v3/Mailing.php(643): CRM_Mailing_BAO_MailingJob::runJobs((Array:12))
#9 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/Civi/API/Provider/MagicFunctionProvider.php(89): civicrm_api3_mailing_send_test((Array:10))
#10 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/Civi/API/Kernel.php(96): Civi\API\Provider\MagicFunctionProvider->invoke((Array:9))
#11 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/api/api.php(23): Civi\API\Kernel->run("mailing", "send_test", (Array:10), NULL)
#12 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/Civi/API/Subscriber/ChainSubscriber.php(195): civicrm_api("mailing", "send_test", (Array:10))
#13 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/Civi/API/Subscriber/ChainSubscriber.php(72): Civi\API\Subscriber\ChainSubscriber->callNestedApi((Array:34), (Array:5), "create", "Mailing", 3)
#14 [internal function](): Civi\API\Subscriber\ChainSubscriber->onApiRespond(Object(Civi\API\Event\RespondEvent))
#15 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/EventDispatcher.php(164): call_user_func((Array:2), Object(Civi\API\Event\RespondEvent))
#16 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/EventDispatcher.php(53): Symfony\Component\EventDispatcher\EventDispatcher->doDispatch((Array:4), "api.respond", Object(Civi\API\Event\RespondEvent))
#17 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/Civi/API/Kernel.php(221): Symfony\Component\EventDispatcher\EventDispatcher->dispatch("api.respond", Object(Civi\API\Event\RespondEvent))
#18 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/Civi/API/Kernel.php(98): Civi\API\Kernel->respond(Object(Civi\API\Provider\MagicFunctionProvider), (Array:9), (Array:5))
#19 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/api/api.php(23): Civi\API\Kernel->run("Mailing", "create", (Array:34), NULL)
#20 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/CRM/Utils/REST.php(404): civicrm_api("Mailing", "create", (Array:34))
#21 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/CRM/Utils/REST.php(640): CRM_Utils_REST::process((Array:3), (Array:32))
#22 [internal function](): CRM_Utils_REST::ajax()
#23 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/CRM/Core/Invoke.php(278): call_user_func((Array:2))
#24 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/CRM/Core/Invoke.php(86): CRM_Core_Invoke::runItem((Array:12))
#25 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/CRM/Core/Invoke.php(54): CRM_Core_Invoke::_invoke((Array:3))
#26 /home6/frederk3/public_html/lcfcadmin/sites/all/modules/civicrm/drupal/civicrm.module(489): CRM_Core_Invoke::invoke((Array:3))
#27 [internal function](): civicrm_invoke("ajax", "rest")
#28 /home6/frederk3/public_html/lcfcadmin/includes/menu.inc(519): call_user_func_array("civicrm_invoke", (Array:2))
#29 /home6/frederk3/public_html/lcfcadmin/index.php(21): menu_execute_active_handler()
#30 {main}