On 04/18/11 10:07, Carlos Mennens wrote: > My <postmaster> default account is getting hammered with spam. I've > got SA / Amavisd-new working and tagging the messages as ***spam*** > however I've just re-configured SA to be a little more aggressive on > scoring the messages. My question to the Postfix group is if I can > configure a restriction in /etc/postfix directory to prevent repeat > offenders from sending email to me. Someone a few years ago on this > mailing list assisted me on configuring Postfix to use a > 'client_access' & 'client_access.db' file to block IP's as shown > below: > > 95.98.160.248 REJECT > 190.64.194.12 REJECT > > I've noticed that I am now getting spam emails from several different > hosts on one single network rather than from a particular host. Can I > block the entire network as follows: > > 95.98.* REJECT > > I'm sure many on the list wouldn't do this on their personal mail > server but I'm looking for a simple method that will stop the junk > mail. I know the 'client_access' flat file works fine but it's very > tedious to continuously add several IP's from the same network in when > I can simply blanket the entire network. If legit mail is blocked due > to this, I can review the rule at that time and see if it's safe to > lift the block or white-list that one particular client I.P.
If you prevent anyone on that network from sending to postmaster, how are they going to let you know that there's a false positive?
