I entered
30 0 * * Sunday
into : "Schedule Cron time for RebuildSpamdb (RebuildSchedule)"
The result was continuous sending of email notifications of the RebuildSpamdb Scheduler had stopped.
Nov-04-11 10:11:29 [Worker_10001] Info: ReStart Scheduler stopped
Nov-04-11 10:11:29 [Worker_10001] Info: starting RebuildSpamdb Scheduler with '30 0 * * Sunday'
Nov-04-11 10:11:29 [Worker_10001] Error: Invalid cronentry 'Sunday' at /usr/lib/perl5/site_perl/5.12.3/Schedule/Cron.pm line 1131.
Nov-04-11 10:11:29 [Worker_10001] Info: RebuildSpamdb Scheduler stopped
Nov-04-11 10:11:29 [Worker_10001] Info: notification message queued to sent to administrator.assp@domain.com
Nov-04-11 10:11:29 [Worker_10001] Info: ReStart Scheduler stopped
Nov-04-11 10:11:29 [Worker_10001] Info: starting RebuildSpamdb Scheduler with '30 0 * * Sunday'
Nov-04-11 10:11:29 [Worker_10001] Error: Invalid cronentry 'Sunday' at /usr/lib/perl5/site_perl/5.12.3/Schedule/Cron.pm line 1131.
Nov-04-11 10:11:29 [Worker_10001] Info: RebuildSpamdb Scheduler stopped
Nov-04-11 10:11:29 [Worker_10001] Info: notification message queued to sent to administrator.assp@domain.com
Nov-04-11 10:11:29 [Worker_10001] Info: ReStart Scheduler stopped
Nov-04-11 10:11:29 [Worker_10001] Info: starting RebuildSpamdb Scheduler with '30 0 * * Sunday'
Nov-04-11 10:11:29 [Worker_10000] Info: successful sent file resendmail/n1000100189849.eml to 192.168.1.246:1025 (smtpDestination) - Message sent
Nov-04-11 10:11:29 [Worker_10001] Error: Invalid cronentry 'Sunday' at /usr/lib/perl5/site_perl/5.12.3/Schedule/Cron.pm line 1131.
Nov-04-11 10:11:29 [Worker_10001] Info: RebuildSpamdb Scheduler stopped
Nov-04-11 10:11:29 [Worker_10001] Info: notification message queued to sent to administrator.assp@domain.com
Nov-04-11 10:11:29 [Worker_10001] Info: ReStart Scheduler stopped
Nov-04-11 10:11:29 [Worker_10001] Info: starting RebuildSpamdb Scheduler with '30 0 * * Sunday'
Nov-04-11 10:11:29 [Worker_10001] Error: Invalid cronentry 'Sunday' at /usr/lib/perl5/site_perl/5.12.3/Schedule/Cron.pm line 1131.
Nov-04-11 10:11:29 [Worker_10001] Info: RebuildSpamdb Scheduler stopped
Nov-04-11 10:11:29 [Worker_10001] Info: notification message queued to sent to administrator.assp@domain.com
Nov-04-11 10:11:29 [Worker_10001] Info: ReStart Scheduler stopped
Nov-04-11 10:11:29 [Worker_10001] Info: starting RebuildSpamdb Scheduler with '30 0 * * Sunday'
Nov-04-11 10:11:29 [Worker_10001] Error: Invalid cronentry 'Sunday' at /usr/lib/perl5/site_perl/5.12.3/Schedule/Cron.pm line 1131.
When I changed the entry to
30 0 * * Sun
everything returned to normal.