Was running dovecot-1.0.rc2 but many stale imap processes (only one user of IMAP).
Switched to dovecot-1.0.rc6 but problem continued.
This is on FreeBSD 4 something. Maybe it has bug with kqueue??
I read messages about the stale imap processes on the list. It seems to hit *BSD systems. But email about new release candidate indicated it should be fixed.
I read on the pkgsrc commit list about --with-ioloop=best
So I configured with that and saw that the I/O loop method is now kqueue. (I saved configure output and it was poll before).
But the stale imap processes problem continues.
For one user over past couple hours I have eight imap processes in "I" state.
I have:
File offsets ........................ : 64bit I/O loop method ..................... : kqueue File change notification method ..... : kqueue Building with SSL support ........... : yes (OpenSSL) Building with IPv6 support .......... : yes Building with pop3 server ........... : yes Building with mail delivery agent .. : yes Building with GSSAPI support ........ : no Building with user database modules . : static prefetch passwd passwd-file checkpassword (modules) Building with password lookup modules : passwd passwd-file pam checkpassword (modules) Building with SQL drivers ............:
And I have:
protocols = imap pop3 protocol imap { imap_client_workarounds = outlook-idle delay-newmail }
(Just started using delay-newmail today.)
My maillogs don't show any problems.
The IMAP user tells me that Outlook says it has reset connections often.
I see multiple imap-login Login within a few minutes for this same user who said received a connection reset in outlook at the same time.
Just received a screenshot that said:
Microsoft Office Outlook
Failed to update headers.
The TCP/IP connection unexpectedly terminated by the server.Then also received an error (in Outlook I think), like:
imap session idle too long, connection reset(I don't have or use Outlook myself so can't test myself.)
It is used for a lot of pop3 and seems fine with that. (It uses stunnel for pop3s but not imaps for over a week to eliminate stunnel from our troubleshooting).
Any ideas on troubleshooting this would be appreciated.
Jeremy C. Reed