On Friday 18 December 2009, Derek Simkowiak wrote:
> I've been using Postfix w/postgrey + spamassassin (via amavisd) +
> RBL lists + SMTP sender verification.
>
> My email address is very old, and I use a few aliases, so I still
> get ~40 spams per day. Thunderbird's Bayesian filtering catches ~98% of
> those that get to my Inbox.
>
> I've looked into doing server-side Bayes spam filtering, however,
> any solution I looked at could not be considered "secure". (It was a
> couple of years ago... I forget exactly what the problem was. I think
> it was because the Bayesian whitelist would contain keywords (and names)
> from valid emails, thus exposing information about the organization. If
> you sent a spam containing specific acronyms or part numbers, and it
> didn't get bounced, you'd know those terms were being used in valid
> emails in that organization.)
>
> I also use the Mailhop store-and-forward service from DynDNS. That
> protects me in the event my mail server (or Internet connection) goes
> down -- it caches emails until my server comes back online. The Mailhop
> service includes spam filtering, too, but my guess is that they're using
> the same OSS tools I am, so I doubt that it helps.
>
> I've been tempted to use TMDA:
>
> http://tmda.net/
>
> With TMDA, new email senders get a "Are you really a human?"
> auto-response, which they must then reply to. If they reply, their
> original message (and all subsequent messages) get through. If they
> don't reply, you never see the first email (which is probably a spam).
>
> I've done some consulting work in Europe and Asia... and here are
> some of the spams I got today:
>
> Тренажеры от 1500р.
> dereks采购流程优化及供应商评估
> 合同管理与风险解析及规避
> Любовь - не картошка, не выбросишь в окошко
> ДИПЛОМЫ, АТТЕСТАТЫ, АКАДЕМИЧЕСКИЕ СПРАВКИ И Т.П.
>
>
UGH! I *abhore* those things! I will not use them in my personal
correspondence for the most part!
