Hello Is there an easy way to block a list of prefixes from accessing postfix?
Right now I use ipfilter on FreeBSD to block certain ranges/countries as only spam is originating from there... Preferably I would like to combine prefix and domain filtering as plain helo_checks won't allow regular expression for hostnames. Best way for me would be to hook up an external script which filters based on the from/to/ip triplet and allow/denies connection regardless of SMTP AUTH settings. cheers richard
