Date: Tue, 13 May 1997 18:43:11 -0700 (PDT) From: Dan Busarow <dan@dpcsys.com> To: John Beukema <john@packfish.gateway.net.hk> Cc: freebsd-isp@FreeBSD.ORG Subject: Re: Sendmail hack Message-ID: <Pine.UW2.3.95.970513183655.12150V-100000@cedb> In-Reply-To: <Pine.BSI.3.91.970512094844.13597A-100000@packfish.gateway.net.hk>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, 12 May 1997, John Beukema wrote: > How do you stop spammers who use an existing address which is not theirs? > jbeukema The latest check_rcpt at http://www.informatik.uni-kiel.de/%7Eca/email/check.html#check_rcpt gets the sender's IP address. If you add one file F{SpamIP} /etc/sendmail.spamip and one more test R$={SpamIP}$* $| $* $#error $@ 5.7.1 $: Spammer access denied you can add entries to sendmail.spamip to block known spammers by IP address or IP prefix. It's harder for them to fake their IP address and IP addresses tend to last longer than domain names for spammers so this really helps. Add the R$={Spam ... right after the LocalIP test and F{SpamIP} right after F{LocalIP} Dan -- Dan Busarow 714 443 4172 DPC Systems / Beach.Net dan@dpcsys.com Dana Point, California 83 09 EF 59 E0 11 89 B4 8D 09 DB FD E1 DD 0C 82
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.UW2.3.95.970513183655.12150V-100000>