i'm running netbsd-3.0 with the following setup:

 - cgd0 partitions for all but root
 - courier-imap-4.0.6 binary package
 - postfix-2.2.9 w/ SASL from pkgsrc

all is working fine until i try to open mail folders that have a large number of
messages in them, at which point packets back up for the IMAPS session in
question. both mutt-1.5.9 and thunderbird-1.0.7 (on openbsd-3.8-release) seize
up when downloading headers for > ~50 messages in a given folder via IMAPS. all
of this is being done locally on the 10.9/16 subnet.

whether i'm using mutt or thunderbird, the output is as follows:

 - open a larger (> 50 messages) mailbox: get "Fetching message headers...
[50/175]" and it freezes here; prints similar message for thunderbird

 - from /var/log/maillog on IMAPS server:
...
Apr 11 23:10:37 mail imapd-ssl: LOGIN, user=jy-p@mysite.com,
ip=[::ffff:10.9.1.2], protocol=IMAP
Apr 11 23:10:40 mail imapd-ssl: /usr/pkg/etc/courier/shared/index: No such file
or directory
Apr 11 23:11:49 mail imapd-ssl: DISCONNECTED, user=jy-p@mysite.com,
ip=[::ffff:10.9.1.2], headers=56771, body=0, time=72, starttls=1

 - from "netstat -na":
Active Internet connections (including servers)
Proto Recv-Q Send-Q  Local Address          Foreign Address        State
tcp        0  29769  10.9.0.3.993           10.9.1.2.13309         ESTABLISHED

that's a little packet backup, eh? everything else has been working fine so far
:), i just want to fix this.

if config files are needed for diagnosis, let me know.

please CC me in replies since i am not on the mailing list.

cheers,
jacob yocom-piatt