[Mimedefang] broken pipe

[Marco Berizzi]

Hello.

I'm using MD 2.29 with sendmail 8.12.7 on Slackware 8.1 (kernel 2.4.20 +
xfs patch from SGI).
I have taken a look at maillog and this morning I have found this error:

from=<user at XXX>, size=4153098, class=0, nrcpts=1,
msgid=<OFE99A4BD4.C2D08557-ONC1256CC2.00>, proto=ESMTP, daemon=MTA,
relay=s0.gw [194.185.142.106]
Feb  4 00:17:05 vega sm-mta[7426]: h13KugOC007426: Milter (mimedefang):
write(L) returned -1, expected 5: Broken pipe
Feb  4 00:17:05 vega sm-mta[7426]: h13KugOC007426: Milter (mimedefang):
to error state
Feb  4 00:17:05 vega sm-mta[7426]: h13KugOC007426: Milter: data,
reject=451 4.7.1 Please try again later
Feb  4 00:17:05 vega sm-mta[7426]: h13KugOC007426: to=<user at mydomain>,
delay=02:20:21, pri=30546, stat=Please try again later

I'm using the default md-filter for windoze client + file-scan, SA 2.43,
and anomy 1.19

This is the startup script for MD:

/usr/bin/mimedefang-multiplexor -U defang -R 10000 -M 30000 -x 10 -m
3 -b 150 -i 300 -s /var/run/MIMEDefang/mdefang-mx.sock
/usr/bin/mimedefang -U defang -r -m
/var/run/MIMEDefang/mdefang-mx.sock -p
/var/run/MIMEDefang/mimedefang.sock -P
/var/run/MIMEDefang/mimedefang.pid

and this the relevant section of my sendmail.cf

O MaxDaemonChildren=6
...
O ConnectionRateThrottle=1
...
Xmimedefang, S=unix:/var/run/MIMEDefang/mimedefang.sock, F=T,
T=S:30s;R:30s;E:5m
...

This is a small system: celeron 266 64MB ram IDE hd (XFS filesystem), 1k
messages/day