On 22.08.2017 12:10, Jerry wrote: > I saw nothing about the Postfix master.cf file. Do I need to make > and changes to it also?
No need. Assuming that you use a socket, the following combination should suffice: # Dovecot service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { user = postfix group = postfix mode = 0660 } } # Postfix mailbox_transport = lmtp:unix:private/dovecot-lmtp If you have further questions or a more exotic setup, you might want to consider asking on the Postfix mailing list. -Ralph