Re: Using 2 LDAP sources for passdb

On 2026-06-02 09:36, Aki Tuomi via dovecot wrote:
>>> I can't seem to find documentation that shows how to set up 2 LDAP passdb blocks. I can get each of them working properly, but only the second of the two works at any given time. I can't figure out the syntax needed to get both to work, even though I've been all over the Dovecot 2.4x official documentation. The docs seem to suggest settings that the server rejects.
>>>
>>> Anyone have any experience doing this, or know the correct syntax? Thanks in advance!
>>
>> # you can share settings like this
>> ldap_auth_dn = cn=dovecot,ou=apps,dc=example,dc=com
>> ldap_auth_dn_password = D0vec0t
>> ldap_uris = ldapi://%2Frun%2Fldapi
>> ldap_version = 3 
>> ldap_bind = yes
>>
>> passdb ldab-1 {
>>  driver = ldap 
>>  ldap_bind_userdn = cn=%{user},ou=apps,dc=example,dc=com
>>  ldap_filter = (&(objectClass=applicationProcess)(cn=%{user}))
>> }
>>
>> passdb ldap-2 {
>>   driver = ldap
>>   ldap_bind_userdn = cn=%{user},ou=apps,dc=example,dc=com
>>   ldap_filter = (&(objectClass=posixAccount)(uid=%{user|username})(memberOf=cn=mail,ou=%{user|domain},ou=groups,dc=example,dc=com))
>> }
>>
>> Aki
> 
> Sorry, small mistake
> 
> ldap_bind = yes => passdb_ldap_bind = yes

Thanks for your replies.

2026.06.02 13:52:40 auth([email protected],10.0.0.99,sasl:plain)<qgg2+khTlLgKAABj>: Debug: sasl(plain): Set authid '[email protected]'
2026.06.02 13:52:40 auth([email protected],10.0.0.99,sasl:plain)<qgg2+khTlLgKAABj>: Debug: sasl(plain): Performing plain passdb verification
2026.06.02 13:52:40 auth([email protected],10.0.0.99,sasl:plain)<qgg2+khTlLgKAABj>: Debug: ldap-1: Performing passdb lookup
2026.06.02 13:52:40 auth([email protected],10.0.0.99,sasl:plain)<qgg2+khTlLgKAABj>: Debug: ldap-1: Finished passdb lookup
2026.06.02 13:52:40 auth([email protected],10.0.0.99,sasl:plain)<qgg2+khTlLgKAABj>: Debug: ldap-2: Performing passdb lookup
2026.06.02 13:52:40 auth([email protected],10.0.0.99,sasl:plain)<qgg2+khTlLgKAABj>: Debug: ldap-2: Finished passdb lookup
2026.06.02 13:52:43 auth([email protected],10.0.0.99,sasl:plain)<qgg2+khTlLgKAABj>: Debug: sasl(plain): Finished plain passdb verification (status=internal-failure)
2026.06.02 13:52:43 auth([email protected],10.0.0.99,sasl:plain)<qgg2+khTlLgKAABj>: Debug: sasl(plain): Interaction failed (internal failure)
2026.06.02 13:52:43 auth([email protected],10.0.0.99,sasl:plain)<qgg2+khTlLgKAABj>: Debug: Auth request finished
2026.06.02 13:52:43 auth([email protected],10.0.0.99,sasl:plain)<qgg2+khTlLgKAABj>: Debug: immediate auth failure due to internal failure

Not getting either one to work. This is with full debugging on. It looks like the internal error happens instantly, no attempt to contact the directory.
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