We have SugarCRM 5.0.0c running on CentOS / Apache / MySQL. When we try to do a email campaign to 12,000 people we are getting the following error in the /var/log/httpd:

[Wed May 21 12:17:35 2008] [error] [client 216.240.30.23] PHP Notice: Undefined variable: btracker in /d2/www/websites/crm.carolinarailhawks.com/website/modules/EmailMan/EmailMan.php on line 703, referer: http://crm.carolinarailhawks.com/ind...n&action=index
[Wed May 21 12:17:55 2008] [error] [client 216.240.30.23] PHP Notice: Undefined variable: btracker in /d2/www/websites/crm.carolinarailhawks.com/website/modules/EmailMan/EmailMan.php on line 683, referer: http://crm.carolinarailhawks.com/ind...n&action=index
[Wed May 21 12:17:55 2008] [error] [client 216.240.30.23] PHP Notice: Undefined variable: btracker in /d2/www/websites/crm.carolinarailhawks.com/website/modules/EmailMan/EmailMan.php on line 703, referer: http://crm.carolinarailhawks.com/ind...n&action=index
[Wed May 21 12:18:15 2008] [error] [client 216.240.30.23] PHP Notice: Undefined variable: btracker in /d2/www/websites/crm.carolinarailhawks.com/website/modules/EmailMan/EmailMan.php on line 683, referer: http://crm.carolinarailhawks.com/ind...n&action=index
[Wed May 21 12:18:15 2008] [error] [client 216.240.30.23] PHP Notice: Undefined variable: btracker in /d2/www/websites/crm.carolinarailhawks.com/website/modules/EmailMan/EmailMan.php on line 703, referer: http://crm.carolinarailhawks.com/ind...n&action=index

The sugarcrm.log shows the following during the same period:

[root@dhi28 website]# tail -f sugarcrm.log
Wed May 21 12:26:01 2008,791 [22224] INFO SugarCRM - Query Execution Time:0.00074799999999997
Wed May 21 12:26:01 2008,798 [22224] INFO SugarCRM - Update schedulers: Update schedulers set deleted='0', date_modified='2008-05-21 16:26:01', created_by=null, name='Check Inbound Mailboxes', job='function:ollMonitoredInboxes', date_time_start='2005-01-01 22:45:00', date_time_end='2021-01-01 04:59:00', job_interval='*::*::*::*::*', time_from=null, time_to=null, last_run='2008-05-21 16:26:00', status='Active', catch_up='0' WHERE ID = 'be9bf8cd-6a30-b71b-9e04-47a66810d1f3'
Wed May 21 12:26:01 2008,798 [22224] INFO SugarCRM - Save: Update schedulers set deleted='0', date_modified='2008-05-21 16:26:01', created_by=null, name='Check Inbound Mailboxes', job='function:ollMonitoredInboxes', date_time_start='2005-01-01 22:45:00', date_time_end='2021-01-01 04:59:00', job_interval='*::*::*::*::*', time_from=null, time_to=null, last_run='2008-05-21 16:26:00', status='Active', catch_up='0' WHERE ID = 'be9bf8cd-6a30-b71b-9e04-47a66810d1f3'
Wed May 21 12:26:01 2008,799 [22224] INFO SugarCRM - Query:Update schedulers set deleted='0', date_modified='2008-05-21 16:26:01', created_by=null, name='Check Inbound Mailboxes', job='function:ollMonitoredInboxes', date_time_start='2005-01-01 22:45:00', date_time_end='2021-01-01 04:59:00', job_interval='*::*::*::*::*', time_from=null, time_to=null, last_run='2008-05-21 16:26:00', status='Active', catch_up='0' WHERE ID = 'be9bf8cd-6a30-b71b-9e04-47a66810d1f3'
Wed May 21 12:26:01 2008,800 [22224] INFO SugarCRM - Query Execution Time:0.00061299999999997
Wed May 21 12:26:01 2008,800 [22224] DEBUG SugarCRM - ----->Scheduler Job completed successfully
Wed May 21 12:26:01 2008,800 [22224] DEBUG SugarCRM - ----->Schedulers->deriveDBDateTimes() got an object of type: schedulers
Wed May 21 12:26:01 2008,800 [22224] DEBUG SugarCRM - ----->got * day
Wed May 21 12:26:01 2008,801 [22224] DEBUG SugarCRM - ----->got * months
Wed May 21 12:26:01 2008,801 [22224] DEBUG SugarCRM - ----->Scheduler did NOT find valid job (Prune Database on 1st of Month) for time GMT(2008-05-21 16:26)

Usually the brower will show "this website cannot display the page" we refresh and select the whole group again and finally everything gets sent out. Any help is appreciated.

Chris