thx, i've implemented that already for dovecot.
but i have the quota problem with users that are on our exchange
server backend (it doesnt support this quota service)
is there a way to tell postfix that it accepts only mail on the
frontend when the backend server (transport smtp destination) says
Hello!
we are using Postfix as our MX Server for several mailservers, mostly
dovecot. We have now implemented an exchange Server as well.
We are using the reject_unverified_recipient in combination with smtp
transport-table to submit the E-mail back to the exchange Server.
With our dovecot backen
