Accessing to mail as another user

[Marco Giunta]

Hi,
we have such configuration in our Dovecot; it is configured with virtual 
users and acl. To enable access of userA mailbox to userB, first I have 
to add userB to userA acl, and then I put userA username in an 
ARBITRARY_FIELD of userB record in our ldap (if you use a db for your 
account, the configuration could be more simple). We use the 
ARBITRARY_FIELD to limit the access of other users mailboxes: the field 
is not writable by the user, only by administrators.


Our config files:

/etc/dovecot/conf.d/auth-master.conf.ext
...
passdb {
   driver = ldap
   master = yes

   args = /etc/dovecot/dovecot-ldap.conf.masterusers
   pass = yes
   default_fields = 
userdb_mail=maildir:/path_to_mailboxes/%1{login_user}/%{login_user}:INDEXPVT=/path_to_indexes/%1n/%n/shared/%{login_user}
}

and in /etc/dovecot/dovecot-ldap.conf.masterusers
...
pass_attrs = uid=user,userPassword=password
pass_filter = 
(&(uid=%n)(accountStatus=active)(ARBITRARY_FIELD=%{login_user}))


to login, you have to use the same way of a masteruser:

Login: userA*userB
Password: userB_password


Cheers,
   Marco



On 2016-02-10 07:49, Angel L. Mateo wrote:
> El 09/02/16 a las 13:44, Matthias Fechner escribió:
>>
>> do you maybe mean shared mailboxes:
>> http://wiki.dovecot.org/SharedMailboxes
>>
>      I don't want shared mailboxes. I have to access the other mailbox
> as a complete separate account from my personal one.
>
>      I think I can achive this with master user, but I need to found a
> way to configure permissions so the real user has access to all folders
> in the other mailbox.
>

-- 
Marco Giunta - ITCS SysAdmin
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