Qmail+SquirrelMail wouldn't sending on 1st Turn 'Send' Click thru squirrel page

[budhysb <budhysb@xxxxxxxxxx>]

To All,

Sorry if it is an OOT post, i'm not very sure if it was a squirrelmail
problem, qmail misconfigured, or courier-imap problem.

i'm in stucked on
my SquirrelMail 'Send' Click-Button which wasn't take further to deliver
the messages, while i was click the 'Send' button on a first turn, 
(it gaves us 'Server Replied' Message on the Squirrel Mail Web pages).

The weird thing was:
===================
if i was click it on a second or third turn, 
the messages was
sucesfully delivered.

PS: i'm using Qmailtoaster.org rpm's package installed already,
within Squirrelmail 1.4.2 Fedora Core 2, configured with
courier-IMAP.

i also have proper 'sent' results on 

# echo To:user@xxxxxxxxxx|/var/qmail/bin/qmail-inject 

or thru

# telnet mail.host.domain 25


The question is, 
===============
should i increase the /usr/local/bin/softlimit -m <value>  
on /var/qmail/supervise/qmail-smtpd/run
or i misconfigured them ?

FYI:
=====================================================
my /var/qmail/supervise/qmail-smtpd/run is :

#!/bin/sh
PATH=$PATH:/usr/local/bin:/var/qmail/bin
export PATH
QMAILDUID=`id -u vpopmail`
NOFILESGID=`id -g vpopmail`
MAXSMTPD=100
exec /usr/local/bin/softlimit -m 5000000 tcpserver -H -R -v -x
/etc/tcp.smtp.cdb -c \
"$MAXSMTPD" -u "$QMAILDUID" -g "$NOFILESGID" 0 25 qmail-smtpd 2>&1


FYI: my /var/qmail/supervise/smtp/run is :
===============================================
#!/bin/sh
QMAILDUID=`id -u vpopmail`
NOFILESGID=`id -g vpopmail`
MAXSMTPD=`cat /var/qmail/control/concurrencyincoming`
BLACKLIST=`cat /var/qmail/control/blacklists`
SMTPD="/var/qmail/bin/qmail-smtpd"
TCP_CDB="/etc/tcprules.d/tcp.smtp.cdb"
RBLSMTPD="/usr/bin/rblsmtpd"
HOSTNAME=`hostname`
VCHKPW="/home/vpopmail/bin/vchkpw"
                                                                                                                             
exec /usr/bin/softlimit -m 10000000 \
     /usr/bin/tcpserver -v -R -H -l $HOSTNAME -x $TCP_CDB -c "$MAXSMTPD"
\
     -u "$QMAILDUID" -g "$NOFILESGID" 0 smtp \
     $RBLSMTPD $BLACKLIST $SMTPD $VCHKPW /bin/true 2>&1

my /var/qmail/control/concurrencyincoming  set to -> 100



Thanks,


Budhy