replication sync_client dying cyrus-imap 2.3.0

[Patrice]

Hi,

yesterday evening my replication was working on my test system.
I unplugged network and came back today , plugged it again.

I tried to send an email but this one wasn't replicated on the replica. 
(I waited a few minutes and my sync_repeat_interval is 60)

I made a "ps aux" and saw that the 2 processes sync_client where not 
existing
that was the cause of no replication.

my authentication is made via saslauthd on another server on openldap


if authentication cannot be made, it seems that sync_client  die

I launched by hand:
su - cyrus -c "/cyrus-imap/bin/sync_client -r"
--> sync ok
and now  2 processes sync_client now are running.

here is my config for replication:

sync_host: 192.168.1.2
sync_authname: cyrus
sync_password: xxxxxxxxxx
sync_machineid: 1
sync_log: yes
sync_repeat_interval: 60



and ideas about this behavior ?

thanks in advance

Patrice