zimbra 5.0.5 -> 5.0.6, multi-server, sasl auth broken

[spirit]

Hi, i've upgraded from 5.0.5 to 5.0.6, and my sasl smtp auth is broken,

the command,

zmprov gamau

give me the frontends server for authentification, and it must be the mailbox server.

i don't know how to change this value,

i've try
zmprov ms zimbrasmtp1.odiso.net zimbraMtaAuthHost zimbrastore1.odiso.net

but it's not the same value,

so for the moment, i've hardcoded the right value for auth server in the file:

/opt/zimbra/cyrus-sasl/etc/saslauthd.conf


can anybody tell me how to change the getAllMtaAuthURLs value in ldap ?