> Hm, works for me. > How do you invoke deliver? (in Postfix's master.cf) As I have the same problem: > dovecot unix - n n - - pipe > flags=DRhu user=vmail:vmail argv=/usr/lib/dovecot/deliver -s -d $(recipient) > main.cf: > virtual_transport = dovecot > dovecot_destination_recipient_limit = 1 > dovecot_destination_concurrency_limit = 1