Again, a bit more reading got me to adding this to my passdb config:

  username_filter = *@domain-a.com

This way, I can control which domains get to authenticate via my ldap backend, 
which gives me time to design a good way of saving other attributes there.

If anyone have other ways of doing this, ie., having multiple domains on 
ldap/freeipa and getting an elegant integration with Dovecot, I’d be glad to 
hear.

Best,

Francis

> On 14 Oct 2022, at 21:58, dovecot-requ...@dovecot.org wrote:
> 
> I actually saw that it was possible, and it works, but I came across another 
> problem and I wonder if you have any tips about it:
> 
> On my current dovecot setup, I use SQL as the backend. So I have the 
> following users:
> 
> fran...@domain-a.com <mailto:fran...@domain-a.com> 
> <mailto:fran...@domaina.com>
> fran...@domain-b.com <mailto:fran...@domain-b.com> 
> <mailto:fran...@domain-b.com>
> 
> Those are separate users which their own mailboxes.
> 
> However, I have a freeipa that is configured for the `domain-a.com 
> <http://domain-a.com/> <http://domain-a.com/>` realm. However, since I am 
> using `%n` for the uid search:
> 
> auth_bind_userdn = uid=%n,cn=users,cn=accounts,dc=domain-a,dc=com
> And 
> pass_filter = (&(objectClass=posixAccount)(uid=%n))
> 
> It of course leads up to both users above being able to authenticate with the 
> same password.
> 
> Is there a way to limit ldap authentication to just one domain, or perform a 
> search where both username and domain are checked? I could use the 
> `mail``attribute to filter users, but I imagine that if two users have the 
> same mail configured, I?d run into trouble?.
> 
> Best,
> 
> Francis
> 
>> On 14 Oct 2022, at 20:08, dovecot-requ...@dovecot.org 
>> <mailto:dovecot-requ...@dovecot.org> wrote:
>> 
>> Hi,
>> 
>> I couldn't find it in the documentation, so I was wondering - is it 
>> possible to configure Dovecot to use LDAP for passdb and keep using SQL 
>> for userdb?
>> 
>> I would like to do that before I come up with a good strategy to expand 
>> my ldap schema to support other mail attributes for virtual domains, 
>> aliases, etc.
>> 
>> I am currently using FreeIPA.
>> 
>> Best,
>> 
>> Francis
> 

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