Our server's tracking of spam email vs. wanted email placed the spam rate
at 95-98% for all the years we ran our own mail server.
Just think how fast the internet would be if providers got much more
serious about killing spamming accounts. One of the simplest means of
blocking it just isn't routinely done, yet it helped us eliminate virtually
all remaining spam from our server when we ran it.
Just turn on doing BOTH forward and reverse DNS look-ups on the sending
server before accepting the connection (it's even in an RFC, so it's
"legal"). When they don't match, drop the connection because it's certainly
either 1) spam or 2) a mis-configured server. ISPs and organizations that
started getting most of their email dropped and not delivered would quickly
learn how to do things correctly, and spammers would have a huge loophole
closed to them.
But then... the majority of people running Microsoft Exchange servers would
actually have to learn how to properly configure both those servers and
their firewalls, and experience has shown that's unlikely to happen in my
lifetime...
---
Scott
On Mon, Mar 26, 2012 at 17:46, List, OM <om-list@xxxxxxxxxxx> wrote:
> Your internet service provider or email provider is filtering the vast
> majority of the spam sent to your email address. Someone has found away
> around your provider's filtering. Gmail is very good at filtering spam ...
> they know what everybody is doing and thinking ;-)
>
> About 10 years ago I turned off all of the spam filtering to my email
> address. Don't try doing that. I was receiving something insane like 8,000
> spam emails a day wtih the filtering shut off.
>
> Jeff
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