Could it be a programming error in 389-ds-base? After all, the error message we're getting is: [06/Jun/2023:14:41:05.346079522 +0200] - ERR - slapi_ldap_bind - Could not send bind request for id [cn=replication manager,cn=config] authentication mechanism [SIMPLE]: error -1 (Can't contact LDAP server), system error -5987 (Invalid function argument.), network error 0 (Unknown error, host "consumer.mydomain.example:636") which contains "system error -5987 (Invalid function argument.)". That log seems to be created by slapi_ldap_bind in file: https://github.com/389ds/389-ds-base/blob/c6b2236c39e248005fa5ccd3aecdc0d47b183fa8/ldap/servers/slapd/ldaputil.c#L897 which is called by https://github.com/389ds/389-ds-base/blob/c6b2236c39e248005fa5ccd3aecdc0d47b183fa8/ldap/servers/plugins/replication/repl5_connection.c#LL1891C10-L1891C25 So could it be that there is a bug in this call (or in the slapi_ldap_bind implementation itself). Apparently, slapi_ldap_bind seems to be also only called by the replication, chainingdb and dna plugins, so maybe that is the reason why the error doesn't occur anywhere else. Kind regards Jakob _______________________________________________ 389-users mailing list -- 389-users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to 389-users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/389-users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue