Gilbert Sebenste wrote: > Hello everyone, > > Occasionally I get emails which have a subject header of "Rejected posting > to Blah", from a listserv I am on. Without going into a 10 page diatribe > of why, I'd like to reject these automatically, sending them to /dev/null. > I used to run Sendmail and that was pretty easy to do. How can I do this > under Postfix under CentOS 5.3? Do you want to reject them or eat them and send them to /dev/null ? If you want to reject them something like this would work: header_checks = regexp:/etc/postfix/regexp_table and in /etc/postfix/regexp_table something like: /^Subject: This is the subject I want to reject REJECT 554 Custom rejection message nate