Justin Mason wrote:
Hey all --
I'm on the technical advisory board for MailChannels, a company who make a
commercial traffic-shaping antispam product, Traffic Control. Basically,
you put it in front of your real MTA, and it applies "the easy stuff" --
greet-pause, early-talker disconnection, lookup against front-line DNSBLs,
etc. -- in a massively scalable fashion, handling thousands of SMTP
connections on a single box. By taking care of 80% of the bad stuff
upfront, it takes a massive load off of your backend -- and, key point,
off your SpamAssassin setup. ;)
Until recently, the product was for-pay and (relatively) hard to get your
hands on, but as of today, they're making it available as a download at
http://mailchannels.com/download/ . Apparently: "it's free for low-volume
use, but high volume users will need a license key."
Anyway, take a look, if you're interested. I think it's pretty cool.
(and I'm not just saying that because I'm on their tech advisory board. ;)
Justin,
I respect you, but I feel sorry here. Tarpit and slowdown are know since
a long time, so mailchannel bring nothing here (except marketing). In
particular,"greet pause" has been implemented by some people. the fact
that this is not common is not due to an implementation difficulty, but
to the fact that the cost/benefit ratio is not very interesting.
