mailbox_command = /usr/local/libexec/dovecot/deliver (path to deliver) After that should I commented postfix/local process from master cf ?
no. How else is postfix going to deliver to _local_ users? When uncommented I can see in logs that although deliver is using - local is used somewhere. Can anyone explain how it works and why postfix/local is needed? Logs with uncomended local: postfix/local is the local handoff, hence its name. See: http://www.postfix.org/local.8.html
