[Mimedefang] Problem receiving multiple messages with the attachment truncated at various sizes from a slow connected mail server

[Steven_Ellison at brlhardy.com.au]

We keep receiving the same message every 30 mins.  Their link is 
reportedly slow but I don't realy know
where to start looking for this problem.  The total message size is under 
500kb.

We get around 4 to 5 thousand messages a day and do not see any others 
with the same problem!

Has anyone else encountered this problem before ?

        Steve

Example log entries:
Nov 21 17:06:29 mail sendmail[8396]: gAL6T3tC008396: 
from=<Belinda at aimsa.com.au>, size=464350, class=0, nrcpts=1, msgid=
<E774F7692AC68941B1304ADD148CAD1808045B at aim01.aimsa.local>, proto=ESMTP, 
daemon=MTA, relay=austra13.lnk.telstra.net [139
.130.136.181]
Nov 21 17:06:30 mail sendmail[8396]: gAL6T3tC008396: Milter add: header: 
X-Scanned-By: MIMEDefang 2.23 (www . roaringpen
guin . com / mimedefang)
Nov 21 17:06:30 mail sendmail[8547]: gAL6T3tC008396: 
to=<Virginia_Phillips at brlhardy.com.au>, delay=00:07:27, xdelay=00:0
0:00, mailer=esmtp, pri=534401, relay=adelaide.brlhardy.com.au. 
[10.1.0.3], dsn=2.0.0, stat=Sent (Message accepted for d
elivery)
----------------------
Nov 21 17:30:51 mail sendmail[8826]: gAL6t3tC008826: 
from=<Belinda at aimsa.com.au>, size=464348, class=0, nrcpts=1, msgid=
<E774F7692AC68941B1304ADD148CAD1808045B at aim01.aimsa.local>, proto=ESMTP, 
daemon=MTA, relay=austra13.lnk.telstra.net [139
.130.136.181]
Nov 21 17:30:57 mail sendmail[8826]: gAL6t3tC008826: Milter add: header: 
X-Scanned-By: MIMEDefang 2.23 (www . roaringpen
guin . com / mimedefang)
Nov 21 17:31:20 mail sendmail[8897]: gAL6t3tC008826: 
to=<Virginia_Phillips at brlhardy.com.au>, delay=00:06:15, xdelay=00:0
0:23, mailer=esmtp, pri=534401, relay=reynella.brlhardy.com.au. 
[10.1.0.195], dsn=2.0.0, stat=Sent (Message accepted for
 delivery)
----------------------
Nov 21 17:55:24 mail sendmail[9186]: gAL7L4tC009186: 
from=<Belinda at aimsa.com.au>, size=464350, class=0, nrcpts=1, msgid=
<E774F7692AC68941B1304ADD148CAD1808045B at aim01.aimsa.local>, proto=ESMTP, 
daemon=MTA, relay=austra13.lnk.telstra.net [139
.130.136.181]
Nov 21 17:55:24 mail sendmail[9186]: gAL7L4tC009186: Milter add: header: 
X-Scanned-By: MIMEDefang 2.23 (www . roaringpen
guin . com / mimedefang)
Nov 21 17:55:25 mail sendmail[9247]: gAL7L4tC009186: 
to=<Virginia_Phillips at brlhardy.com.au>, delay=00:04:20, xdelay=00:0
0:01, mailer=esmtp, pri=534401, relay=adelaide.brlhardy.com.au. 
[10.1.0.3], dsn=2.0.0, stat=Sent (Message accepted for d
elivery)
----------------------
Nov 21 18:22:12 mail sendmail[9388]: gAL7kZtC009388: 
from=<Belinda at aimsa.com.au>, size=464349, class=0, nrcpts=1, msgid=
<E774F7692AC68941B1304ADD148CAD1808045B at aim01.aimsa.local>, proto=ESMTP, 
daemon=MTA, relay=austra13.lnk.telstra.net [139
.130.136.181]
Nov 21 18:22:13 mail sendmail[9388]: gAL7kZtC009388: Milter add: header: 
X-Scanned-By: MIMEDefang 2.23 (www . roaringpen
guin . com / mimedefang)
Nov 21 18:22:13 mail sendmail[9413]: gAL7kZtC009388: 
to=<Virginia_Phillips at brlhardy.com.au>, delay=00:05:37, xdelay=00:0
0:00, mailer=esmtp, pri=534401, relay=adelaide.brlhardy.com.au. 
[10.1.0.3], dsn=2.0.0, stat=Sent (Message accepted for d
elivery)
----------------------

Remote MTA response
220 aimsa.com.au Microsoft ESMTP MAIL Service, Version: 5.0.2195.4453 
ready at  Fri, 22 Nov 2002 07:53:41 +1030
214-This server supports the following commands:
214 HELO EHLO STARTTLS RCPT DATA RSET MAIL QUIT HELP AUTH TURN ATRN ETRN 
BDAT VRFY


Local system:
Celeron 800
640MB Memory
RedHat 7.1
Perl, v5.6.1 built for i686-linux-thread-multi(with 1 registered patch, 
see perl -V for more detail)
Sendmail (8.12.0.Beta16)
SA 2.20
clamav-0.51

MimeDefang 2.23
    MAX_SLAVES=4
    MIN_SLAVES=2
    BUSY_TIMEOUT=120
    IDLE_TIMEOUT=1200

Startup for daemons
"Starting mimedefang-multiplexor: "
            daemon $MULTIPLEX -x $MAX_SLAVES \
                -m $MIN_SLAVES \
                -b $BUSY_TIMEOUT \
                -i $IDLE_TIMEOUT \
                $DO_LOGGING $STATS_LOG $FLUSH_STATS \
                -s /var/spool/MIMEDefang/mdefang-mx.sock -p 
/var/spool/MIMEDefang/mdefang-mx.pid -U clamav
            RETVAL=$?
            echo ""
            [ $RETVAL -ne 0 ] && exit 1

            echo -n "Starting mimedefang: "
            daemon $MIMEDEFANG -m /var/spool/MIMEDefang/mdefang-mx.sock \
                -p /var/spool/MIMEDefang/mimedefang.sock $SENDER_CHECK 
$RELAY_CHECK \
                -P /var/spool/MIMEDefang/mimedefang.pid -U clamav


==============================================
         MIS Department, BRL Hardy Limited
           Reynella, South Australia, 5161
==============================================