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Slightly OT... Spam prevention the Bilano Way!
From: "Billy B. Bilano" <mr.bill.bilano () email server unix bill bilano biz>
Date: Thu, 01 Jul 2004 23:02:08 -0500

Yo Dudes!

Bill Bilano here. Back to give you some updates on the situation at the office. It looks like our new Sun's will be in to replace our heavily infected Dell Xeon web servers. Port 443 traffic has finally died down since we took all the bank's web servers off. We've only lost about 1600 customers over the whole thing so it's not a big deal to anybody of importance. They don't need account information anyway, they are all poor and know they are broke to begin with.

Anyway, I am writing you all about the ever growing problem of spam. I get tons of spam evey day at the bank. I believe everybody here is getting lot of spam. We've got one guy who is really upset about the spam! His name is Ben and he works in the Account Retention department. He's so mad at me he just flips me off whenever he sees me and, the other day, he called me a loser. I can only imagine the amount of spam he is getting to make him so mad.

So, since we're a bank and we're cheap, we have to get a lot of bangs for our buck. The best thing we could do was to write a good spam filter to soothe the savage executives and keep them from breathing down my crack.

I wrote this a week ago and have had it in full production use! It's doing a great job and I have not gotten a single spam and I have lost zero messages. Greylisting, so far, has been a great thing! So good that everybody (other than Ben) has thanked me (which they already do at any chance because, as I have said before, I am the reason they didn't get hacked to hell and are still in business). So, since you all have helped me out so much, I am giving a little back to the community!

I've gone ahead and written my first open-source app for you all to have a go with! It is a free and open implementation of the greylisting spam method as seen on greylisting.org for the wonderful and terrific Postfix MTA by Weister "Ace" Venera!

I got it up for everybody to have a go at. See what you think, play with it, use it, and peer review it so that it can, maybe, get included in the next Postfix kernel!

You will need Postfix 2.1 and MySQL for this! Be sure to read the doc so you don't screw it up like you always do.

You can get my app from my website: http://www.bilano.biz/

Mr. Billy B. Bilano, MSCE, CCNA
Expert Sysadmin Since 2003!

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