Timo Sirainen tss@iki.fi writes:
On Wed, 2009-10-07 at 20:55 -0400, Dan Christensen wrote:
Oct 7 20:19:40 jdc dovecot: IMAP(jdc): Connection closed bytes=303/1423 Oct 7 20:44:00 jdc dovecot: IMAP(jdc): Disconnected in APPEND bytes=1081/1965
The connection just got closed from Dovecot's point of view.
Have you tried without SSL?
The very frequent dropped connections don't happen if I don't use TLS. To summarize:
- they happen with TLS to port 143
- they don't happen with a plain connection to port 143
- they don't happen with a TLS connection to port 11143
- they don't happen if I connect using ssh jdc.math.uwo.ca dovecot --exec-mail imap
Very strange. I can trigger the drop 100% of the time by copying 20 or 30 messages from a local folder to a remote imap folder.
Anyway I can't think of anything besides some weird network issue or maybe some firewall/antivirus in the middle.
Could be. But now it's clear that it's not affecting all traffic to port 143, only tls traffic. Weird.
Some clients also support "imap over ssh", you could try that. Basically use "ssh server dovecot --exec-mail imap" as the command.
That works well and is also quite fast to connect, so I'll probably stick with it.
Thanks for the help,
Dan