[Dovecot] Is Dovecot Director stable for production??

[Henrique Fernandes]

Robert, does't you have problens with performance  ? What mail storage do
you use, maildir mbox or other one? do you use any particular config to
seeting up your OCFS2 cluster?

I am using in prodution  ldiretord and heartbeat with balancing 2 servers
with dovecot 2.07 and have another server in the cluster for maillist.

But i am having lots of problens with IO wait.  I am in really troubel
trying to figure out how to manage that. I am not sure if is ocfs2 or my
swicth or the storage it self. We still trying to figure out this. Are you
with any problem with IO in your cluster ?? thanks


Aliet, have you thought about is is better to use ipvs or dovecot diretord
to do de job ?  I mean does anyone know ? if it is let me know so i can
configure also here.

Thanks

And i am sorry not help!


[]'sf.rique


On Sat, Nov 13, 2010 at 8:50 PM, Aliet Santiesteban Sifontes <
alietsantiesteban at gmail.com> wrote:

> Ok, I answer to my self what I did:
>
> In /etc/dovecot/dovecot.conf
>
> protocols = imap pop3 lmtp sieve
>
> In /etc/dovecot/conf.d/10-auth.con
>
> disable_plaintext_auth = no
>
> Removed comment to
> !include auth-static.conf.ext
>
> In /etc/dovecot/conf.d/auth-static.conf.ext
>
> passdb {
>  driver = static
>  args = proxy=y nopassword=y
> }
>
> In /etc/dovecot/conf.d/10-master.conf to fix perms
>
> service auth {
> ...
>    mode = 0600
>    user = dovecot
>
> ...
>
> In /etc/dovecot/conf.d/20-lmtp.conf
>
> lmtp_proxy = yes
>
> In /etc/dovecot/conf.d/10-director.conf
>
> director_servers = 172.29.9.25 172.29.9.26
>
> director_mail_servers = 172.29.9.10 172.29.9.11
>
> director_user_expire = 15 min
>
> service director {
>  unix_listener login/director {
>    mode = 0666
>  }
>  fifo_listener login/proxy-notify {
>    mode = 0666
>  }
>  unix_listener director-userdb {
>    mode = 0600
>  }
>  inet_listener {
>    port = 4000
>  }
> }
>
> service imap-login {
>  executable = imap-login director
> }
> service pop3-login {
>  executable = pop3-login director
> }
>
> # Enable director for LMTP proxying:
> protocol lmtp {
>  auth_socket_path = director-userdb
>  passdb {
>    driver = static
>    args = proxy=y nopassword=y port=24
>  }
> }
>
>
> Both backend configured and working using ldap, with this director config
> is
> working but I still have a problem...
> if I run command
>
> doveadm director map I get
>
> user                                              mail server ip expire
> time
> <unknown>                                         172.29.9.11    2010-11-13
> 17:43:31
>
> lmtp, imap and pop director working but in the list the user appears as
> unknown, how tofix this??
> any ideas??
>
> 2010/11/13 Aliet Santiesteban Sifontes <alietsantiesteban at gmail.com>
>
> > Today I will try Dovecot Director for a setup using a Cluster Backend
> with
> > GFS2 on rhel5, my question is if is Director stable for use in production
> > for large sites, I know is mainly designed for NFS but I believe it will
> do
> > the job also for a cluster filesystem like GFS2 and should solve the mail
> > persistence problem with a node and locking issues.
> > I plan to add a layer behind a load balancer to do the stuff, I will
> > appreciate if you guys can point me to best practices in configuring the
> > director, or how the thing works since is new for me, I have seen the
> > example conf but I don't have clarity in some of the concepts and the
> wiki
> > is empty.
> > I use 2.0.6, thank's for a great job with dovecot.
> > best regards, Aliet
> >
>