replication fails with "Error: sync: Unknown user in remote" but user shows up in doveadm user "*"

Hello,

I've been trying to replicate a production server (debian buster, dovecot 2.3.4.1). But I nothing is actually being replicated and for each attempted user the message "Error: sync: Unknown user in remote" is being logged.

The ldap settings are actually the same on both server (source and destnation) and the "unknown user" is actually showing up in doveadm user "*" on the destination server.

I had already replicated 2 servers and used the same settings. Am I missing something obvious here?

Thanks,

Arnaud

-- Arnaud Abélard Responsable pôle Système et Stockage Service Infrastructures DSIN Université de Nantes