> > >>> Personally, I would classify RBL as a totally illegal activity. Those >>> f*cking idiots have blocked me way too many times. So no, I won't send >>> you a RBL list. >>> >> >> This is bad and misleading advice. Just because you are listed on one >> or more RBLs does not mean they are bad. Tolga, use zen.spamhaus.org >> to reject at SMTP time. Also consider rejecting machines that HELO (or >> EHLO) with "dynamic looking" hostnames. >> > Although somewhat controversial, I've had great success with exactly that. > > A couple of dozen regular expressions that match things like "dynamic", > "home", numeric addresses and similar patterns in > /etc/postfix/spam_ip_regex in smtpd_client_restrictions cuts the spam > and the calls to RBLs way down: > > smtpd_client_restrictions = > permit_mynetworks, > permit_sasl_authenticated, > reject_unauth_destination, > hash:/etc/postfix/whitelist, > regexp:/etc/postfix/spam_ip_regex, > reject_unknown_reverse_client_hostname, > reject_unauth_pipelining, > reject_non_fqdn_recipient, > reject_rbl_client zen.spamhaus.org > > Terry > > >
Coul you give some examples of what one might use (and the syntax) in a /etc/postfix/spam_ip_regex file to make this work? thanks, Chas.
