Hello,

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# doveadm mailbox list -u user001 doveadm(user001): Error: user user001: Auth PASS lookup failed doveadm(user001): Fatal: passdb lookup failed

Are you running this on a Dovecot proxy? It looks like doveadm wants to do a passdb lookup to find out which server should handle this user. Passdb lookups don't work with LDAP binding. But if everything else works then I think you simply shouldn't have enabled doveadm proxying. So, set doveadm_proxy_port back to 0?

thank you Timo, setting doveadm_proxy_port to 0 did the trick.