[Dovecot] Director problems

[Joseba Torre]

Hi,

I've just setup a testing enviroment for director, and it's not working 
as expected. I have just 1 director (called director) and 2 dovecot 
servers (dovecot1 and dovecot2); these are exact copies.

First problem: when both dovecot servers are up, every imap connection 
is redirected to the same server as you can see here:

$ sudo doveadm director map
user                                          mail server ip expire time 

<unknown>                                     158.227.4.186  2012-06-06 
13:34:12
<unknown>                                     158.227.4.186  2012-06-06 
13:34:27
<unknown>                                     158.227.4.186  2012-06-06 
13:34:34

(I don't know if that <unknown> is good or not)

I've tried with 3 different users and ips to no change, users are always 
directed to the same host.

Second problem: if I try to add/remove/modify one of the dovecot 
servers, the output of doveadm director map/status seems to be ok, but 
any new user connection fails with this log:

Jun  6 14:51:59 director dovecot: director: Warning: Delaying new user 
requests until ring is synced
Jun  6 14:52:27 director dovecot: director: Error: director: User test1 
host lookup failed: Timeout - queued for 30 secs (Ring not synced for 73 
secs)
Jun  6 14:52:31 director dovecot: imap-login: Aborted login (auth 
failed, 1 attempts in 34 secs): user=<>, method=PLAIN, 
rip=158.227.4.186, lip=158.227.4.185, TLS, session=<Oyx9O83B/wCe4wS6>

Any clue?

This is the dovecot config -n output:

# 2.1.7: /usr/local/etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-220.17.1.el6.x86_64 x86_64 Red Hat Enterprise Linux 
Server release 6.2 (Santiago)
director_mail_servers = dovecot1.example dovecot2.example
director_servers = director.example
lmtp_proxy = yes
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 ihave
passdb {
   args = proxy=y nopassword=y starttls=any-cert
   driver = static
}
service auth {
   unix_listener auth-userdb {
     group = mail
     mode = 0660
     user = dovecot
   }
}
service director {
   fifo_listener login/proxy-notify {
     mode = 0666
   }
   inet_listener {
     port = 9090
   }
   unix_listener director-userdb {
     mode = 0600
   }
   unix_listener login/director {
     mode = 0666
   }
}
service imap-login {
   executable = imap-login director
   service_count = 0
}
service lmtp {
   client_limit = 1
   inet_listener lmtp {
     port = 24
   }
   unix_listener /var/lib/dovecot/lmtp-socket {
     group = root
     mode = 0600
     user = root
   }
}
service pop3-login {
   executable = pop3-login director
   service_count = 0
}
service pop3 {
   process_limit = 5000
}
shutdown_clients = no
ssl_cert = </etc/ssl/private/dovecot.pem
ssl_key = </etc/ssl/private/dovecot.pem
userdb {
   driver = passwd
}
verbose_proctitle = yes
version_ignore = yes
protocol lmtp {
   auth_socket_path = director-userdb
}
protocol imap {
   mail_max_userip_connections = 100
}