Re: 2.4.2 breaks user iterations for LDAP

On 18/02/2026 23:36 EET sev monster via dovecot <dovecot@dovecot.org> wrote:

Has this been addressed? I also experience this issue.

I am also unable to use user binds for password authentication; I must use ldap_auth_dn with a service account before it works. Attempting to use passdb_ldap_bind will fail with the same error otherwise.

For example, this doesn't work:

ldap_uris = ldapi://abc ldap_base = ou=dudes,dc=mysite passdb ldap { ldap_connection_group = login bind = yes bind_userdn = uid=%{user | username | lower },ou=dudes,dc=mysite }

Adding ldap_auth_dn allows it to continue.

Again, the error you get would've been useful. But it's very likely fixed with

https://github.com/dovecot/core/compare/d4ca5ddf4030f9e2d391881b6ca5968b4504...

Aki