configuration question (spam related)

["Ambrose Li [EDP]" <acli@mingpaoxpress.com>]

After the long weekend, of course, the first thing I notice is the
bulkload of spam in my admin mailbox, plus some others.

I noticed some spammer using both a MAIL FROM and a RCPT TO address
in my domain, which would allow the spam to pass through into my site.
Fortunately, the spam was trapped because of some other anti-spam
kludges in the code.

So I wonder, is it possible to configure ZMailer to not accept any
MAIL FROM address in my domain if the mail comes from the outside?
Or is it not possible at the moment?

-- 
Ambrose C. Li / +1 416 321 0088 / Ming Pao Newspapers (Canada) Ltd.
EDP department / All views expressed here are my own; they may or
may not represent the views of my employer or my colleagues.