[Dovecot] Reading mail for Virtual and Real LDAP Users

[Marshal Newrock]

On Tue, 20 Feb 2007 11:39:39 -0700
Aaron Luchko <aaron.luchko at oxn.ca> wrote:

> I'm trying to setup a system with ldap+postfix+dovecot. Everyone who
> gets an email is stored in LDAP, some of these users also have a local
> unix account, regardless I want all users to be dealt with as virtual
> users.
> 
> All the mail is stored by postfix in /var/spool/mail in Maildir format
> with permissions 600 vmail:vmail. Everything works fine when dovecot
> tries to read the mail of a completely virtual user, the problem is
> when dovecot tries to read mail for a user who has an account on the
> machine, dovecot finds the user's local account, then it tries to
> read the mail as that user. Even if first_valid_{u,g}id is low enough
> to allow login the user still doesn't have sufficient permissions to
> read the mail.

[snip]

> auth default {
>   mechanisms = plain
>   passdb pam {
>   }
>   userdb passwd {
>   }
>   userdb ldap {
>     args = /etc/dovecot-ldap.conf
>   }
>   passdb ldap {
>     args = /etc/dovecot-ldap.conf
>   }
>   user = root
> }

Comment out "passdb pam" and "userdb passwd".  These are telling
dovecot to look for real system users.

-- 
Marshal Newrock, Ideal Solution LLC
http://www.idealso.com