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From: Ariel on 28 Jun 2008 08:57
On Sat, 28 Jun 2008 04:58:14 -0700
make1.5.calrobert(a)spamgourmet.com (Robert Maas, http://tinyurl.com/uh3t) wrote:

> > Date: Tue, 06 May 2008 15:07:31 -0700
> > From: make1.5.CalRobert(a)SpamGourmet.Com (Robert Maas, http://tinyurl.com/uh3t)
> Attention anyone who might have wanted to reply to me privately:
>
> Shortly after I posted my thread-starter, a spammer harvested my
> address and sent me two Nigerian 419 spam before I could disable
> the address.
>
> After I disabled this address, eleven additional e-mail were sent
> to this address, all discarded, no NDN issued in any case. Most of
> these additional/discarded messages were probably from the spammer,
> but I have no way to know. Not one legitimate message arrived prior
> to the two Nigerian spam.
>
> In case anyone reading this thread sent me e-mail and I never
> replied, that's why, I never received your e-mail.
>
> Anybody who wants to reply to me privately on this topic
> (if you tried before, I hope you saved a backup copy of your message text),
> try this address instead (camoflaged here):
> make <digit2> <dot> <digit5> <dot> CalRobert <at the same domain as before>
> Spammers flood my mailbox with several hundred e-mail per day.
> Blame it on them that I have to take such drastic measures to try
> to separate the very very few legitimate e-mail I receive from the
> thousand times more spam that I receive.
> Blame it on Yahoo! Mail for not providing any proper spam-filtering
> system whereby I could **reject** any e-mail I don't want, and I
> have to resort to a third-party (SpamGourmet) filtering system
> which also has the bad design of accepting-then-discarding e-mail
> to addresses I've already disabled instead of rejecting the e-mail
> so that you'd get a NDN (Non-Delivery Notice) from your mail agent,
> but at least SpamGourmet lets me spawn variants of the same basic
> address that all feed to the same mailbox so that I can disable
> some variant addresses and keep others active while needing to look
> in only one mailbox for all the e-mail that arrived via all those
> variants.

Not sure about how Yahoo handles mail, but I've found that greylisting has worked magic for cutting spam at the server level. The best part is it doesn't pull false postitives based on message content, but delays acceptance of an email (with a 45X error message denoting to retry delivery soon). This is very effective for stopping random return address and volatile open proxy styles of spam. Only false positives are from old SMTP servers that do not adhere to SMTP RFC (the list is very short and virtually unseen on the interweb). Definately worth looking into if you or your mailserver admin can be assed with implimenting it (these days there are many implementations for all the mainstream SMTP servers).
-a
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