Hello List

I know this is a sendmail problem, but maybe one of you 
has experience with this case.

I've set up mailman 2.1.8 on a Solaris 9 SPARC box. All 
runs fine, exept one mail coming from a java app is 
discarded by sendmail and thus not arriving mailman. I've 
searched the whole day, but found nothing. I've also 
patched sendmail to:

220 bahamas.sila.local ESMTP Sendmail 8.13.8+Sun/8.13.8; 
Wed, 15 Nov 2006 17:14:36 +0100 (CET)

/var/log/syslog states

Nov 15 14:25:47 bahamas sendmail[2873]: [ID 801593 
mail.warning] kAFDElPY002873: collect: premature EOM: 
unexpected close
Nov 15 14:25:47 bahamas sendmail[2873]: [ID 801593 
mail.notice] kAFDElPY002873: collect: unexpected close on 
connection from swexch01lpro.sila.local, 
sender=<[EMAIL PROTECTED]>
Nov 15 14:25:47 bahamas sendmail[2873]: [ID 801593 
mail.info] kAFDElPY002873: 
from=<[EMAIL PROTECTED]>, size=1219, 
class=0, nrcpts=1, proto=ESMTP, daemon=MTA-v4, 
relay=swexch01lpro.sila.local [172.25.2.76]

/var/adm/messages says

Nov 10 14:19:28 bahamas sendmail[17781]: [ID 801593 
mail.crit] kAADCavb017781: SYSERR(root): collect: I/O 
error on connection from swexch02rpro.sila.local, 
from=<[EMAIL PROTECTED]>

The network ist stable. MTUs are set correctly. Sending 
Server is an MS Exchange (220 SWEXCH.sila.local Microsoft 
ESMTP MAIL Service,  Version: 6.0.3790.1830 ready at  Wed, 
15 Nov 2006 17:18:58 +0100). All other mails from this 
(and others) server are accepted and threatened correctly.

I have no clue for what to look for, any ideas would be 
appreciated greatly.

TIA

Tom Stocker

-- Acceleris GmbH | and IT works
Thomas Stocker | Technical Consultant Linux / Solaris
Webergutstr. 2 | CH-3052 Zollikofen
t +41 31 911 33 22 | m +41 78 609 08 85
thomas.stocker (at) acceleris.ch | www.acceleris.ch
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