Date: Sat, 10 Oct 2009 21:56:18 +0400 From: Jeff Laine <wtf.jlaine@gmail.com> To: Kevin Kinsey <kdk@daleco.biz> Cc: freebsd-questions@freebsd.org Subject: Re: Tcpwrappers, sendmail, and unknown hosts... Message-ID: <20091010175617.GA84102@free.bsd.loc> In-Reply-To: <4AD0C4D5.1060308@daleco.biz> References: <4AD0C4D5.1060308@daleco.biz>
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On Sat,10-10-2009 [12:31:01], Kevin Kinsey wrote: > Seems like a lot of the spam we fight comes from > hosts with no DNS entries. What about using this? > > ---------------------------------- > > $grep sendmail /etc/hosts.allow > > sendmail : KNOWN : allow > sendmail : UNKNOWN : deny > > --------------------------------- > > Comments? anyone tried it? > Hi Kevin! What you need is 'require_rdns' feature. Also from my own expirience, dnsbl feature of Sendmail works great for spammers scum. -- Best regards, Jeff | "Nobody wants to say how this works. | | Maybe nobody knows ..." | | Xorg.conf(5) |
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