"Friends Only"

[Douglas Ward]

Is there a similar function in postfix?

On 10/2/06, Matt Hampton <matt at coders.co.uk> wrote:
>
> Greg Borders wrote:
> > Greetings list-mates,
> >
> > The PHB's have discovered the ability of some mail systems that require
> > you to "validate" your address before they will accept messages, thus
> > avoiding SPAM.  Example, surgemail has a "Friends System"
> > http://netwinsite.com/surgemail/friends.htm, and eMoustTrap has a
> > package that sits between the MTA and MUA and does the authentication.
> >
> > Yippie yay, now they want it too. -_-
> >
> > Without wanting to spark any further heated debates on autoresponders,
> > I wanted to query the group and see if there was any slick bolt-ons for
> > sendmail / MailScanner / Mailwatch out there that might take advantage
> > of some whitelisting mechanisms we already have.  I can see potential of
> > a custom script within MailScanner that could send a subscribe/verify
> > message, and then auto-add to a whitelist upon receiving a proper
> > response from the human sender.
> >
>
> Before you go down this router - try milter-sender (or I have a perl
> replacement if you are interested) which checks that the email address
> is accepted by the MX's for the domain before accepting it.  I have
> found a 60% reduction in crud before it gets as far as MailScanner.
>
> I would highly recommend doing this even if you are wanting to go down
> the auto responder route and I would also suggest that the auto
> responder is placed AFTER MailScanner as it would ensure that the
> majority of Spam is removed before sending more crap to the joe jobbed
> addresses.
>
> You will also need to ensure that the email is sent from a different IP
> than your outbound email as it will only take about a week before you
> will be in SpamCop.
>
> Matt
>
>
> --
> MailScanner mailing list
> mailscanner at lists.mailscanner.info
> http://lists.mailscanner.info/mailman/listinfo/mailscanner
>
> Before posting, read http://wiki.mailscanner.info/posting
>
> Support MailScanner development - buy the book off the website!
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.mailscanner.info/pipermail/mailscanner/attachments/20061002/f78e3d1f/attachment.html