Hi, my config is: FreeBSD 4.2, qmail 1.03, smtp-auth. my problem: I do not want my users to use a different "From-domain". Some people use their businnes-account for (heavy-traffic) private mail exchange. They simply replace their "[EMAIL PROTECTED]" with "[EMAIL PROTECTED]" in their private Mailprogs. smtp-auth makes it easy for them because they have a valid login. So is there any possibility to reject any mail which does not contain my local domain either as part of the sender adress or as part of the recipient adress? thanks for your hints /clemens