fusillator: > Does FILTER_README suppose you have a dns record for localhost? > Is there a way to use /etc/hosts to resolve localhost?
FILTER_README does none of that. It just describes how you use a Postfix SMTP client (or other Postfix delivery agent) to send mail into a filter, and how to get that mail back into Postfix. In other words, if your SMTP client can't deliver to localhost, then that has nothing to do with content filtering. By default (smtp_host_lookup = dns) the SMTP client uses DNS to look up destinations. You can change that; see http://www.postfix.org/postconf.5.html#smtp_host_lookup Wietse
