[Dovecot] How to avoid "authenticated user not found" - messages when using multiple Ldap userdbs/passdbs?

[Sebastian Urbanneck]

On 16.12.2010 15:25, Charles Marcus wrote:
> On 2010-12-16 8:55 AM, Javier de Miguel Rodrí­guez wrote:
>> El 16/12/10 14:50, Sebastian Urbanneck escribió:
>>> Following:
>>>
>>> We've got a Dovecot 1.0.10 running on Ubuntu Hardy. Till now we used
>>> to have only mail accounts under our own domain, but since we're also
>>> a webhoster the people began to ask if there is a possibility to use
>>> there own Domains in there mail address.
>> Try with a pop/imap proxy as perdition, and route based on @domain1,
>> @domain2 to the right mail-backend (or route based in mailHost attibute
>> via ldap search)
> Also, 1.0 is old, you should seriously consider upgrading to at least
> current 1.2.#, if not 2.0.#...
>
I'm not really sure what helped: upgrading to 1.2 or using a fresh 
dovecot.conf and migrating the old configurations into it. Whatever the 
annoying message is gone.
Thanks to both of you :)