[Dovecot] Replication with virtual users and static userdb possible ?

[deano-dovecot at areyes.com]

Ugh, stuff got mangled in formatting below. Anyway, I've had no luck 
with
various permutations, so it's looking like a virtual-user setup can't 
make
use of replication ?

I guess what I want is for it to activate replication upon ANY 
notification
of updated emails.

On 2014-06-03 11:54, deano-dovecot at areyes.com wrote:

> Is it possible to get replication working in a virtual user setup
> that uses a static userdb ? My environment is fairly simple and 
> typical
> - there's a single system user (vmail) that owns all the home dirs
> (/var/mail/domain.com/user). The virtual users
> ( userid @ domain.com : secretpassword) are kept in a single file
> (/var/mail/domain.com/PASSWD) that's unique per domain, and 
> referenced
> as a static userdb :
>
>   passdb {
>     driver = passwd-file
>     args = scheme=plain username_format=%u /var/mail/%d/PASSWD
>   }
>
>   userdb {
>     driver = static
>     args = uid=vmail gid=vmail home=/var/mail/%d/%n
>   }
>
> I know the
> wiki http://wiki2.dovecot.org/Replication states that user listing 
> must
> be enabled, but that's not available for a static userdb. The wiki
> http://wiki2.dovecot.org/UserDatabase/Static also says that it 
> shouldn't
> be a problem because it will use do a passdb lookup instead (except 
> for
> PAM which isn't used here).
>
> Unfortunately, it's not working. I've testing with ssh :
>
>   dsync_remote_cmd = ssh -l vmail %{host} doveadm dsync-server -u%u 
> -l%{lock_timeout} -n%{namespace}
>   mail_replica = remote:vmail at server2.domain.com
>
> as well as with straight tcp (SSL for later)
>
>   mail_replica = tcp:server2.domain.com:999
>
> /var/log/mail.err shows the problems ...
>
> Jun 3 11:30:53 server1 dovecot: auth: Error: Trying to iterate users, 
> but userdbs don't support it
> Jun 3 11:30:53 server1 dovecot: replicator: Error: User listing 
> returned failure
> Jun 3 11:30:53 server1 dovecot: replicator: Error: listing users 
> failed, can't replicate existing data
>
> Anyone else have it working ? I'm sure it's
> something simple that I've just overlooked.