Is there a similar function in postfix?<br><br><div><span class="gmail_quote">On 10/2/06, <b class="gmail_sendername">Matt Hampton</b> <<a href="mailto:matt@coders.co.uk">matt@coders.co.uk</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Greg Borders wrote:<br>> Greetings list-mates,<br>><br>> The PHB's have discovered the ability of some mail systems that require<br>> you to "validate" your address before they will accept messages, thus
<br>> avoiding SPAM. Example, surgemail has a "Friends System"<br>> <a href="http://netwinsite.com/surgemail/friends.htm">http://netwinsite.com/surgemail/friends.htm</a>, and eMoustTrap has a<br>> package that sits between the MTA and MUA and does the authentication.
<br>><br>> Yippie yay, now they want it too. -_-<br>><br>> Without wanting to spark any further heated debates on autoresponders,<br>> I wanted to query the group and see if there was any slick bolt-ons for
<br>> sendmail / MailScanner / Mailwatch out there that might take advantage<br>> of some whitelisting mechanisms we already have. I can see potential of<br>> a custom script within MailScanner that could send a subscribe/verify
<br>> message, and then auto-add to a whitelist upon receiving a proper<br>> response from the human sender.<br>><br><br>Before you go down this router - try milter-sender (or I have a perl<br>replacement if you are interested) which checks that the email address
<br>is accepted by the MX's for the domain before accepting it. I have<br>found a 60% reduction in crud before it gets as far as MailScanner.<br><br>I would highly recommend doing this even if you are wanting to go down<br>
the auto responder route and I would also suggest that the auto<br>responder is placed AFTER MailScanner as it would ensure that the<br>majority of Spam is removed before sending more crap to the joe jobbed<br>addresses.<br>
<br>You will also need to ensure that the email is sent from a different IP<br>than your outbound email as it will only take about a week before you<br>will be in SpamCop.<br><br>Matt<br><br><br>--<br>MailScanner mailing list
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</a><br><br>Before posting, read <a href="http://wiki.mailscanner.info/posting">http://wiki.mailscanner.info/posting</a><br><br>Support MailScanner development - buy the book off the website!<br></blockquote></div><br>