On Fri, 26 Mar 2010, Mark Goodge wrote: > On 26/03/2010 20:54, listadecorreo wrote: > > > >in the last month I revived a lot of spam from user_non_ex...@mydomain > >to user_ex...@mydomain..... can I block all received externals mails > >from my domain to my domain... > > It's very easy to block mails from fake_u...@domain to > real_u...@domain. Just turn on sender address verification for your > own domains.
An easier way to block spam from f...@example.org is to use reject_unlisted_sender. See postconf(5). http://www.postfix.org/postconf.5.html#reject_unlisted_sender http://www.postfix.org/postconf.5.html#smtpd_reject_unlisted_sender -- Sahil Tandon <sa...@tandon.net>