On 27.9.2019 23.21, David Wells - Alfavinil S.A. via dovecot wrote: > Good afternoon. > > I have dovecot setup to authenticate virtual users using either gssapi > or doind a bind to an ldap server to achieve a single sign on capable > imap server connected to a samba active directory DC. What I am also > trying to achieve is to have dovecot's lmtp daemon handle the mails > passed from postfix. However, the only way I've gotten this to work is > setting allow_all_users = yes in the userdb but this causes lmtp to > deliver mails to non existant accounts without rejection. I've been > searching but haven't found a way to set this same thing up but having > dovecots lmtp check the validity of the mails recipient against the same > samba AD DC through ldap before delivering it and rejecting unknown > email addresses. Could someone please provide some insight into how to > achieve this? > > Thank you very much in advance. > Best regards, > David Wells. > > You could setup LDAP userdb without bind authentication, and use a service account instead.
Aki