As I said, the list is growing with new domains every few minutes: greylist - not dealing with bots or scripts. PTR - not helping. Spam must be blocked proactively. Domains, MXs, IPs, PTR are new with every new domain.
One of the spammer is definitely not stupid (NS: *.ns.cloudflare.com). -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of li...@rhsoft.net Sent: Thursday, August 7, 2014 11:32 PM To: postfix-users@postfix.org Subject: Re: Spam blocked by NS Am 07.08.2014 um 22:27 schrieb Marius Gologan: > I'm getting a lot of spam from the domains listed below. > > Since the list is keep growing, I blocked the associated NS (using > check_sender_ns_access) which seems an extreme measure to me. > > Do you have a better suggestion? * greylisting * reject generic PTR * combine blacklists and whitelists by weighting * delay accept of connections * enforce protocol policies
