I have seen some strange error log messages in our dovecot server (2.0.15, RHEL 5.7x64, mdbox+zlib, local storage, high load)

Dec 14 22:01:27 buzon dovecot: imap(fmcarrasco): Error: /indices_dovecot/indices/07/47/fmcarrasco/mailboxes/INBOX/dovecot.index reset, view is now inconsistent Dec 14 22:00:27 buzon dovecot: imap(cfp): Error: /indices_dovecot/indices/16/58/cfp/mailboxes/Sent/dovecot.index reset, view is now inconsistent Dec 14 20:56:46 buzon dovecot: imap(rcam): Error: Corrupted index cache file /indices_dovecot/indices/03/6b/rcam/mailboxes/INBOX/dovecot.index.cache: Broken virtual size for mail UID 132197 Dec 14 21:50:38 buzon dovecot: imap(cfp): Error: Recent flags state corrupted for mailbox INBOX

I have been googling without luck, why does this happen? I have tried with doveadm force-resync, maybe this could solve this issues.

doveconf -n output

# 2.0.15: /etc/dovecot/dovecot.conf # OS: Linux 2.6.18-274.7.1.el5 x86_64 Red Hat Enterprise Linux Server release 5.7 (Tikanga) ext4 auth_cache_negative_ttl = 10 secs auth_cache_size = 10 M auth_cache_ttl = 2 mins auth_master_user_separator = * auth_mechanisms = plain login auth_worker_max_count = 3500 base_dir = /var/run/dovecot/ default_client_limit = 5000 default_process_limit = 6500 disable_plaintext_auth = no imap_client_workarounds = tb-extra-mailbox-sep delay-newmail tb-lsub-flags lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes mail_fsync = never mail_gid = entrega mail_home = /buzones/domain/%2.26Hn/%2.200Hn/%n/home_usuario/ mail_location = mdbox:/buzones/domain/%2.26Hn/%2.200Hn/%n:INDEX=/indices_dovecot/indices/%2.26Hn/%2.200Hn/%n mail_max_userip_connections = 15000 mail_plugins = " zlib acl quota autocreate" mail_uid = entrega managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date mdbox_rotate_interval = 1 days mdbox_rotate_size = 60 M passdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } passdb { args = /etc/usuario_maestro.txt driver = passwd-file master = yes } passdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } plugin { acl = vfile autocreate = SPAM autocreate2 = Sent autocreate3 = Drafts autocreate4 = Trash autosubscribe = SPAM autosubscribe2 = Sent autosubscribe3 = Drafts autosubscribe4 = Trash lda_mailbox_autosubscribe = yes quota = dict:Cuota de usuario::file:/buzones/cuotas/%n quota_rule2 = Trash:storage=+10%% quota_warning = storage=90%% aviso_cuota 90 %u sieve = /buzones/domain/%2.26Hn/%2.200Hn/%n/home_usuario/dovecot.sieve sieve_dir = /buzones/domain/%2.26Hn/%2.200Hn/%n/home_usuario/sieve/ zlib_save = gz zlib_save_level = 9 } pop3_no_flag_updates = yes protocols = pop3 imap sieve service anvil { client_limit = 25000 } service auth { client_limit = 28000 unix_listener auth-master { user = entrega } unix_listener auth-userdb { user = entrega } user = root } service aviso_cuota { executable = script /usr/local/bin/quota-warning.sh unix_listener aviso_cuota { mode = 0666 } user = entrega } service imap-login { executable = /usr/libexec/dovecot/imap-login group = dovenull service_count = 0 vsz_limit = 1 G } service imap { executable = /usr/libexec/dovecot/imap process_limit = 6000 } service managesieve-login { executable = /usr/libexec/dovecot/managesieve-login inet_listener sieve { port = 2000 } process_limit = 2000 vsz_limit = 1 G } service managesieve { executable = /usr/libexec/dovecot/managesieve process_limit = 5000 } service pop3-login { executable = /usr/libexec/dovecot/pop3-login process_limit = 4000 service_count = 0 vsz_limit = 1 G } service pop3 { executable = /usr/libexec/dovecot/pop3 process_limit = 4000 } ssl_ca =

Regards

Maria