qmail queue

Hi list,

I notice that i have a huge queue.

/service/qmail-send: up (pid 1520) 2907232 seconds
/service/qmail-send/log: up (pid 1524) 2907232 seconds
/service/qmail-smtpd: up (pid 1519) 2907232 seconds
/service/qmail-smtpd/log: up (pid 1526) 2907231 seconds
messages in queue: 560
messages in queue but not yet preprocessed: 0

Going through the queue, i notice that almost all of the mails in the the
queue are junk mails sent out to invalid mailboxes.

I had checked the /var/log/qmail/current

@400000003ff925b10cd28244 delivery 194018: deferral:
Sorry,_no_mailbox_here_by_that_name._vpopmail_(#5.1.1)/maildrop:_error_writi
ng_to_mailbox./maildrop:_signal_0x19/
@400000003ff925b10cd2a56c status: local 5/10 remote 0/20
@400000003ff925bb0ce070ac delivery 194019: deferral:
Sorry,_no_mailbox_here_by_that_name._vpopmail_(#5.1.1)/maildrop:_signal_0x19
/
@400000003ff925bb0ce097bc status: local 4/10 remote 0/20
@400000003ff925c01c45349c delivery 194020: deferral:
Sorry,_no_mailbox_here_by_that_name._vpopmail_(#5.1.1)/maildrop:_error_writi
ng_to_mailbox./maildrop:_signal_0x19/
@400000003ff925c01c455bac status: local 3/10 remote 0/20
@400000003ff925c216fa2de4 delivery 194021: deferral:
Sorry,_no_mailbox_here_by_that_name._vpopmail_(#5.1.1)/maildrop:_error_writi
ng_to_mailbox./maildrop:_signal_0x19/

I realised that it is the maildrop is having problem.

I have | preline maildrop ./.mailfilter  in .qmail-default  and  in
.mailfilter i have

############################################
VPOP="| /home/vpopmail/bin/vdelivermail '' bounce-no-mailbox"
VHOME=`/home/vpopmail/bin/vuserinfo -d $EXT@$HOST`

if ( $SIZE < 262144 )
{
         exception {
                 xfilter "/usr/bin/spamc -f -u $VUSR@$HOST"
         }
}

if (/^X-Spam-Flag: *YES/)
{
         exception {
                 include $VHOME/Maildir/.mailfilter
         }
         exception {
                 to /home/vpopmail/domains/nchost.net/abuse/Maildir
         }
}
else
{
         exception {
                 include $VHOME/Maildir/.mailfilter
         }
         exception {
                 to "$VPOP"
                 exit
         }
}
############################################

Can anyone tell me where my mailfilter had gone wrong and how do i clear out
the queue?

I am running qmail 1.03, vpopmail 5.3.20,  spamassassin 2.55, and maildrop
1.5.3



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