Date: Sat, 10 Oct 2009 19:43:57 -0500 From: Kevin Kinsey <kdk@daleco.biz> To: Jeff Laine <wtf.jlaine@gmail.com>, freebsd-questions@freebsd.org Subject: Re: Tcpwrappers, sendmail, and unknown hosts... Message-ID: <4AD12A4D.5010008@daleco.biz> In-Reply-To: <20091010175617.GA84102@free.bsd.loc> References: <4AD0C4D5.1060308@daleco.biz> <20091010175617.GA84102@free.bsd.loc>
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Jeff Laine wrote:
> 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?
>>
>> ----------------------------------
>> $grep sendmail /etc/hosts.allow
>>
>> sendmail : KNOWN : allow
>> sendmail : UNKNOWN : deny
>> ---------------------------------
>>
>> Comments? anyone tried it?
>>
>
> Hi Kevin!
>
> What you need is 'require_rdns' feature.
> Also from my own expirience, dnsbl feature of
> Sendmail works great for spammers scum.
TYTY! Bang-Smack-Out of the park. Lemme
know where I can send {$beverage}.
Mail queue (Sendmail dual + amavid-new + spamassassin)
is down from 100+ to < 10 after adding that to .mc
and rebooting. Thanks a bunch :-)
Kevin Kinsey
DaleCo, S.P.
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