[Mimedefang] error write(L) returned -1, expected 50: Broken pipe

[Marcus Schopen]

Hi,

I found the following error many times but only from the same sending
server in my sendmail log:

---------------------------
Aug 19 12:22:17 server milter-greylist: p7JAME8U015316: addr 88.79.xx.xx
from <sender at domain.de> rcpt <recip at mydomain.de>: autowhitelisted for
another 768:00:00
Aug 19 14:51:45 server sm-mta[15316]: p7JAME8U015316:
from=<sender at domain.de>, size=125990, class=0, nrcpts=1,
msgid=<@OF45480D59.66ADE979-ONC12578F1.00339A09-C12578F8.00294A3Adomain.de>,
proto=ESMTP, daemon=MTA-v4, relay=domino.domain.de [88.79.xx.xx]
Aug 19 14:51:45 server sm-mta[15316]: p7JAME8U015316: Milter (greylist):
write(L) returned -1, expected 50: Broken pipe
Aug 19 14:51:45 server sm-mta[15316]: p7JAME8U015316: Milter (greylist):
to error state
Aug 19 14:51:45 server sm-mta[15316]: p7JAME8U015316: Milter
(mimedefang):
write(L) returned -1, expected 50: Broken pipe
Aug 19 14:51:45 server sm-mta[15316]: p7JAME8U015316: Milter
(mimedefang):
to error state
Aug 19 14:51:45 server sm-mta[15316]: p7JAME8U015316: Milter: data,
reject=451 4.3.2 Please try again later
Aug 19 14:51:45 server sm-mta[15316]: p7JAME8U015316:
to=<recip at mydomain.de>, delay=02:29:28, pri=155990, stat=Please try
again later
---------------------------

my sendmail.mc
---------------------------
define(`MILTER',1)
INPUT_MAIL_FILTER(`greylist',`S=local:/var/run/milter-greylist/milter-greylist.sock, F=, T=S:1m;R:1m')dnl

INPUT_MAIL_FILTER(`mimedefang',
`S=unix:/var/spool/MIMEDefang/mimedefang.sock, F=T,
T=S:5m;R:5m;E:10m')dnl
---------------------------

I can see the sending server in the process table hanging on DATA

---------------------------
21780 ? S 0:00 sendmail: MTA: p7QMGAME021780 domino.domain.de
[88.79.xx.xx]: DATA
---------------------------

System:
sendmail                          8.14.3-5+lenny1 
mimedefang                        2.64-6


Is there anything wrong with my milter timeouts or is it just a buggy
sending system (the sender is a reliable person) and not my problem?

Ciao
Marcus