imap traffic - strange things

[BeNe]

One thing wich i do not understand,
i saw this one in the ispcp-vrl-traff:

Code:

my $smtp_log = "$main::cfg{'LOG_DIR'}/smtp.log";

        my $smtp_delivery_log = "$main::cfg{'LOG_DIR'}/smtp_delivery.log";

        my $imap_log = "$main::cfg{'LOG_DIR'}/imap.log";

        my $pop3_log = "$main::cfg{'LOG_DIR'}/pop3.log";

        my $cmd = "$grep 'postfix' $rlog | $main::cfg{'CMD_PFLOGSUM'} standard 1>$smtp_delivery_log";

But, i have no smtp.log, smtp_delivery.log, imap.log or pop3.log.
PFLOGSUM comes with ispCP is under /usr/sbin/maillogconvert.pl and should create the logs, right ?

Greez BeNe