How can we change the numeric value of spamassassin to a higher number?

How to adjust spam assassin scoring:

- The threshold value of 5 is set in '/etc/mail/spamassassin/local.cf'. The parameter referenced is 'required_hits'. The SPAM uses SOME logic to calculate the score for every mail which passes thru it. The threshold value of 5 seems to be an optimum value. A value below 5 might lead to blocking the genuine mail(s). Modifying this value would be at the user's risk.

Notes:

If the 'required_hits' parameter is modified, SPAM has to be restarted.
'/etc/init.d/qmail restart'
'/etc/init.d/spamd restart'