Hi,

I'm doing the final tests before I migrate my 10000 users from RHEL 4 + dovecot 1.1.20 to RHEL5 + dovecot 1.2.11, and I'm having some serious problems with outlook 2007 clients disconnecting very often.

In dovecot's log I see lot of connects and disconnects from these clients (as oposed to my kmail, that just connects once when I come in and disconnects when I shut it off). After unchecking the "chek every X minutes" thing in outlook I get fewer of those -while functionality remains-, but the main problem still persists: every now and then (more or less 30 mins), the client disconnects, and sometimes the client goes offline. This didn't happen with my previous setup.

I use the outlook-idle workaround, but it doesn't seem to make any difference.
Any ideas?

My dovecot -n

1.2.11: /usr/local/etc/dovecot.conf

OS: Linux 2.6.18-164.11.1.el5 x86_64 Red Hat Enterprise Linux Server release

5.4 (Tikanga) syslog_facility: local1 protocols: imap imaps pop3 pop3s listen(default): *:143 listen(imap): *:143 listen(pop3): *:110 ssl_listen(default): *:993 ssl_listen(imap): *:993 ssl_listen(pop3): *:995 ssl_cert_file: /usr/share/ssl/certs/imapd.pem ssl_key_file: /usr/share/ssl/certs/imapd.pem disable_plaintext_auth: no login_dir: /usr/local/var/run/dovecot/login login_executable(default): /usr/local/libexec/dovecot/imap-login login_executable(imap): /usr/local/libexec/dovecot/imap-login login_executable(pop3): /usr/local/libexec/dovecot/pop3-login login_process_per_connection: no login_max_processes_count: 256 max_mail_processes: 2048 first_valid_uid: 100 mail_location: maildir:~/Maildir:INDEX=/var/dovecot/%u:CONTROL=/var/dovecot- nas/%u/control mail_nfs_storage: yes lock_method: dotlock mail_executable(default): /usr/local/libexec/dovecot/imap mail_executable(imap): /usr/local/libexec/dovecot/imap mail_executable(pop3): /usr/local/libexec/dovecot/pop3 mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): quota mail_plugin_dir(default): /usr/local/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3 imap_client_workarounds(default): outlook-idle imap_client_workarounds(imap): outlook-idle imap_client_workarounds(pop3): pop3_uidl_format(default): %08Xu%08Xv pop3_uidl_format(imap): %08Xu%08Xv pop3_uidl_format(pop3): %v.%u auth default: cache_size: 1000 cache_ttl: 6000 master_user_separator: * debug: yes passdb: driver: passwd-file args: /usr/local/etc/bloqueados deny: yes passdb: driver: ldap args: /usr/local/etc/dovecot-ldap.conf passdb: driver: pam passdb: driver: passwd-file args: /usr/local/etc/dovecot-master.conf master: yes userdb: driver: prefetch userdb: driver: passwd socket: type: listen master: path: /var/run/dovecot/auth-master mode: 384 plugin: quota: fs

-- Joseba Torre. Vicegerencia de TICs, área de Explotación