[Dovecot] Maildir Synchronization warnings

[Charles Marcus]

On 8/2/2013 8:21 AM, Kavish Karkera wrote:
> Sorry Charles, it was posted twice unintentionally (becuase of network issue).

No worries... now, please don't top-post... ;)

> We have 2 pop/imap servers running with director.
>
> Dovecot version = 2.1.12
> Dovecot version = 2.1.13

Very first thing on your troubleshooting ToDo list should always be to 
make sure you are using the latest version of whichever series you 
decide to run.

So, you should upgrade to 2.1.17

> Output of doveconf -n
>
>
> # 2.1.12: /usr/local/etc/dovecot/dovecot.conf
> # OS: Linux 2.6.32-279.19.1.el6.x86_64 x86_64 CentOS release 6.3 (Final)

If you aren't willing to do that for political reasons (ie, phbfh) to do 
with the distro you are using, then your first line of support should be 
that distro's support service, because they may or may not have 
incorporated certain bug fixes in the older version...

> default_client_limit = 50000
> default_vsz_limit = 1 G
> disable_plaintext_auth = no
> doveadm_proxy_port = 24245
> first_valid_uid = 99
> last_valid_gid = 99
> listen = *
> mail_fsync = always
> mail_location = maildir:~/Maildir:INDEX=/indexes/%h:CONTROL=/indexes/%h
> mail_nfs_index = yes
> mail_nfs_storage = yes
> mail_plugins = quota
> mmap_disable = yes
> namespace inbox {
>    inbox = yes
>    location =
>    mailbox Drafts {
>      special_use = \Drafts
>    }
>    mailbox Junk {
>      special_use = \Junk
>    }
>    mailbox Sent {
>      special_use = \Sent
>    }
>    mailbox "Sent Messages" {
>      special_use = \Sent
>    }
>    mailbox Trash {
>      special_use = \Trash
>    }
>    prefix =
> }
> passdb {
>    args = /usr/local/etc/dovecot/dovecot-sql.conf.ext
>    driver = sql
> }
> plugin {
>    quota = maildir:storage=1024
>    quota_rule = *:storage=1024
> }
> service auth {
>    client_limit = 50000
>    unix_listener auth-userdb {
>      group = nobody
>      mode = 0666
>      user = nobody
>    }
> }
> service doveadm {
>    inet_listener {
>      port = 24245
>    }
> }
> service imap-login {
>    process_min_avail = 8
>    service_count = 0
>    vsz_limit = 1 G
> }
> service imap {
>    process_limit = 4096
>    service_count = 0
>    vsz_limit = 1 G
> }
> service pop3-login {
>    process_min_avail = 8
>    service_count = 0
>    vsz_limit = 1 G
> }
> service pop3 {
>    process_min_avail = 8
>    service_count = 0
>    vsz_limit = 1 G
> }
> ssl_cert = </usr/local/etc/dovecot/ssl/certs/dovecot.pem
> ssl_key = </usr/local/etc/dovecot/ssl/private/dovecot.pem
> syslog_facility = local0
> userdb {
>    driver = prefetch
> }
> protocol doveadm {
>    auth_socket_path = director-userdb
> }
> protocol imap {
>    imap_logout_format = bytes=%i/%o
>    mail_max_userip_connections = 15000
>    mail_plugins = quota imap_quota
> }
> protocol pop3 {
>    mail_max_userip_connections = 2048
>    mail_plugins = quota
>    pop3_client_workarounds = outlook-no-nuls
>    pop3_lock_session = yes
>    pop3_no_flag_updates = yes
>    pop3_uidl_format = %08Xu%08Xv
> }