[Tfug] Is HUP necessary after having logroate rotate mail.log?

[elemint at theriver.com]

I have an amavisd-new, spamassassin, postfix configuration and after 
logroate rotates mail.log is  sending an HUP singnal to postfix necessary?
is the " killall -HUP postfix" line necessary?



taken from logrotate.conf


      /var/log/mail.log  {
          daily
          rotate 365
          delaycompress
          create
          postrotate
              killall -HUP postfix
       endscript
    }



Jim