[Exim] Outlook timeouts

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Author: Greg Kable
Date:  
To: exim-users
Subject: [Exim] Outlook timeouts
Hi.

I have Exim v4.24 running on Windows XP using Cygwin and Outlook as a
client. Outlook intermittently hangs while sending mail and I'm
reasonably confident that the problem is a Microsoft "feature". I have
seen that Postcast has a special option to handle Outlook clients and
I'm hoping that somebody here may be able to help with something similar
that I can tune to get past Outlook's behaviour.

As you can see from the log below, everything seems to be fine and Exim
seems to be working correctly. The connection starts, Exim says Hello,
Outlook responds with the MAIL FROM, Exim send OK and then Outlook shuts
up and nothing else happens.

It seems to be linked to particular messages as I can sometimes get the
mail to go through by deleting the blocking message from Outlook but
it's not at all predictable and I have no idea why particular messages
cause this behaviours. My best guess is that it is a timing thing and,
for some reason, outlook is missing the OK.

Any suggestions?

1604 Connection request from 127.0.0.1 port 1610
1604 1 SMTP accept process running
1604 Listening...
908 host in rfc1413_hosts? no (matched "!127.0.0.1/8")
908 sender_fullhost = [127.0.0.1]
908 sender_rcvhost = [127.0.0.1]
908 Process 908 is handling incoming connection from [127.0.0.1]
908 host in host_lookup? no (matched "!127.0.0.1/8")
908 set_process_info:
908 handling incoming connection from [127.0.0.1]
908 host in host_reject_connection? no (option unset)
908 host in sender_unqualified_hosts? no (option unset)
908 host in recipient_unqualified_hosts? no (option unset)
908 host in helo_verify_hosts? no (option unset)
908 host in helo_try_verify_hosts? no (option unset)
908 host in helo_accept_junk_hosts? no (option unset)
908 SMTP>> 220 cleopatra.customware.net ESMTP Exim 4.24 Thu, 02 Oct
2003 15:25:57 +1000
908 Process 908 is ready for new message
908 smtp_setup_msg entered
908 SMTP<< EHLO cleopatra
908 cleopatra in helo_lookup_domains? no (end of list)
908 sender_fullhost = (cleopatra) [127.0.0.1]
908 sender_rcvhost = [127.0.0.1] (helo=cleopatra)
908 set_process_info: 908 handling incoming connection from
(cleopatra) [127.0.0.1]
908 host in pipelining_advertise_hosts? yes (matched "*")
908 host in tls_advertise_hosts? no (option unset)
908 SMTP>> 250-cleopatra.customware.net Hello cleopatra [127.0.0.1]
908 250-SIZE 52428800
908 250-PIPELINING
908 250 HELP
908 SMTP<< MAIL FROM: <xgk@???>
908 SMTP>> 250 OK
908 LOG: lost_incoming_connection MAIN
908 SMTP command timeout on connection from (cleopatra) [127.0.0.1]
908 SMTP>> 421 cleopatra.customware.net: SMTP command timeout -
closing connection
908 search_tidyup called
908 >>>>>>>>>>>>>>>> Exim pid=908 terminating with rc=1
>>>>>>>>>>>>>>>>

1604 child 908 ended: status=0x100
1604 0 SMTP accept processes now running

Thanks,
    Greg