Hi all,
I have a very strange situation here where an exchange-server is trying
to send mail to an exim smarthost. Basically, the exchange-server (2003,
recent patches) sends a message to exim, sends RSET and sends another one.
Exim accepts the first message but then a timeout occurs.
I hardly dare to tell you, but this does not look like an
exchange-error, instead an exim-bug might be more likely....
The exchange-log says:
12:47:25 15 - 220 smtp-greeting
12:47:25 15 EHLO Exchange
12:47:25 15 - 250-smtp
12:47:25 15 MAIL FROM:<somone@somewhere> SIZE=1934
12:47:25 15 - 250 OK
12:47:25 15 RCPT TO:<destination@???>
12:47:25 15 - 250 Accepted
12:47:25 15 DATA -
12:47:25 15 - 354 Enter message
12:47:25 640 - 250 OK id=1DM1sb-0001i6-Ae
12:47:25 703 RSET -
12:47:25 703 - 250 Reset OK
12:47:25 703 MAIL FROM:<someone.else@somwhere> SIZE=6211
12:47:25 703 - 250 OK
12:47:25 703 RCPT TO:<one@???>
12:47:25 703 RCPT TO:<two@???>
12:47:25 703 RCPT TO:<three@???>
12:47:25 703 RCPT TO:<four@???>
12:47:25 703 - 250 Accepted
12:47:25 703 DATA -
12:47:25 703 - 354 Enter message
12:52:25 300703 - 421 smtp
12:52:25 300718 QUIT -
(first colum timestamp, second column seems to be ms since start of
connection, third column the commands sent by exchange, 4th column the
replies).
The second message is probably transfered completely, but either
exchange fails to terminate it correctly or Exim fails to react to the
completion... The exchange-log won't tell us.
However, there is still an exim logfile:
2005-04-14 12:47:25 1DM1sb-0001i6-Ae <= someone@somewhere
H=rzms-ex3.rz.uni-karlsruhe.de [172.21.63.166] P=esmtp S=2074
id=F540278AB4DF944D9263CD0F2D9EE13A0BD7FF@???
from <Andre.Richter@???> for destination@???
2005-04-14 12:47:27 1DM1sb-0001i6-Ae fastreklama.ru [216.74.90.3]:
Connection reset by peer
2005-04-14 12:47:28 1DM1sb-0001i6-Ae == destination@???
R=domain_dns T=smtp_out defer (104): Connection reset by peer:
fastreklama.ru [216.74.90.3]
I don't find ANY reference for the second email in my exim-logs. I did
not try to run a tcpdump (yet), because there is quite some traffic on
my smarthost, but since exim does not write any indication to its
logfiles, that it as ever seen a message or that a connection has been
reset or a connection suffered a timeout, I suspect there might be a bug
in exim somehow concerning the RSET.
Does anybody have any ideas? I didn't find a reference to such a
behaviour in the changelogs for more recent releases, but I might have
missed something.
bash-3.00$ ./exim -bV
Exim version 4.43 #1 built 26-Oct-2004 12:31:39
Copyright (c) University of Cambridge 2004
Berkeley DB: Sleepycat Software: Berkeley DB 4.2.52: (December 3, 2003)
Support for: iconv()
Lookups: lsearch wildlsearch nwildlsearch iplsearch dbm dbmnz
Authenticators:
Routers: accept dnslookup ipliteral manualroute queryprogram redirect
Transports: appendfile autoreply lmtp pipe smtp
Fixed never_users: 0
Contains exiscan-acl patch revision 28 (c) Tom Kistner
[
http://duncanthrax.net/exiscan/]
Configuration file is /var/smtp1/exim/etc/configure
bash-3.00$
--
CU,
Patrick.
