Changing POP3 downloading timing

I'm using the shell access to change postmaster_pop3 cron job timing to 2 minutes as below

*/2 * * * * $HOME/bin/PostMasterPOP3.pl >> /dev/null

I found out that it still downloading the email every 10 minutes. Anything that I miss out?

Thanks.

Just found the answer...

Just found the answer...

Under otrs/bin

sudo su otrs

./Cron.sh start

Cron.sh - start/stop OTRS cronjobs - <$Revision: 1.14 $>
Copyright (c) 2002 Martin Edenhofer
(using /opt/otrs) done

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