Date: Fri, 9 May 97 08:51:25 -0400 From: "Timothy J. Luoma" <luomat@peak.org> To: "Jonathan M. Bresler" <jmb@FreeBSD.org> Cc: freebsd-questions@FreeBSD.org Subject: Re: ESCAPE! Florida Cruise/Vacation $598/4 People Message-ID: <199705091251.IAA09325@kira.peak.org> In-Reply-To: <199705090043.RAA29601@hub.freebsd.org> References: <199705090043.RAA29601@hub.freebsd.org>
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Responding To: "Jonathan M. Bresler" <jmb@FreeBSD.ORG> Original Date: Thu, 8 May 1997 17:43:33 -0700 (PDT) Message-ID: <199705090043.RAA29601@hub.freebsd.org> > we have considered only accepting mail from those that are already > subscribed...this means from the address that they used to > subscribe...a number of people have more thatn 1 email address > this wouldforce them to always use the same address when sending > mail to the list. and god help those whose mail is forwarded A number of lists I am on already do this. I have different accounts, but if I want to post to the group from one of them I sign up and turn off the option to receive the messages from the group on that account. Also: how about checking that the list is mentioned in either the To or Cc line? Yes I know that that will prevent people from Bcc'ing the list, but who cares? Also: how about checking that there is a valid domainname in the 'from'? # whois FL-CRUISE.com No match for "FL-CRUISE.COM". (I believe that the latest sendmail can do this) You can also do, as someone else suggested, keyword checking on email from first-time posters, assuming that each spammer will only try once from each account or name? Yes I know that even these suggestions aren't perfect -- however together they form a pretty good first line of defense... TjL -- TjL <luomat@peak.org> http://www.peak.org/~luomat/next/ Links to all things NeXTStep/OpenStep! Info, pictures, Ftp sites, FAQs and more.
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