You should have pop and imap for dovecot :)
Not sure your conf is correct here is mine


protocols = imap imaps
listen = *
disable_plaintext_auth = no
shutdown_clients = yes
syslog_facility = local7          #<-- Ensure this is set up in syslog conf
ssl_disable = no
login_user = dovecot
login_dir = /home/dovecot/
login_max_connections = 4096
login_greeting =  Italy1 IMAP Server               # <-- CUSTOMISE FOR YOUR
SITE
#default_mail_env = maildir:%h/Maildir
ssl_cert_file = /usr/local/etc/ssl/italy1-cert.pem
ssl_key_file = /usr/local/etc/ssl/italy1.pem
first_valid_uid = 89
first_valid_gid = 89

protocol imap {
    listen = *:143
    ssl_listen = *:993
  #mail_plugins = quota imap_quota
  #login_greeting_capability = no
    mail_plugin_dir = /usr/local/lib/dovecot/imap
  imap_client_workarounds = outlook-idle
}


auth_process_size = 512
auth_cache_size = 1024
auth_cache_ttl = 3600
auth default {
  mechanisms = plain

  # vpopmail authentication
  passdb vpopmail {
    #args =
  }

  # vpopmail
  userdb vpopmail {
  }

  user = root
}

dict {
  #quota = mysql:/etc/dovecot-dict-quota.conf
}

plugin {
  quota = maildir
}



On 1/4/10 02:58 , "Juraj Hantak" <han...@webglobe.sk> wrote:

> Hi,
> 
> We are using vpopmail - dovecot in a cluster configuration.(
> --enable-mysql-replication ) enabled.
> 
> Vpopmail is configured to use two connection, (1 for reading 1 for
> writing) .
> 
> Mysql replications are also configured and working
> 
> Using:  vpopmail 5.4.27
> dovecot :  1.2.9
> 
> Problem:
> After the writing connection go down the authorization for users is not
> working.
> 
> We are getting timeouts for user authorizations.
> 
> Please can you confirm that this cluster configuration is working with
> dovecot without problem?
> 
> We are getting:
> dovecot: pop3-login: Can't connect to auth server at default: Resource
> temporarily unavailable
> at the same time vchkpw running over qmail was working well. (SMTP auth)
> 
> 
> In dovecot we have:
> auth default {
>     mechanisms = plain
>     passdb vpopmail {
>     }
>     userdb vpopmail {
>     }
>     user = vpopmail
> }
> 
> 
> With courier imap there was not this problem.
> 
> Thank you for any response.


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