Stop Spam with Grey Listing in SmarterMail

Apr 17, 2008 by Paul White

For the longest time I had the wrong definition of what grey listing is.  Once I figured out what it really is, and implemented it on my server running SmarterMail 4.x. I saw a huge drop in spam.  If you hate spam, this might very well solve all your problems.  Read this article for information on how it works and why it works.

asp.net http module for project honey pot http IP blacklist

Mar 31, 2008 by Paul White


If there is one things that developers agree on, its that hackers, and spammers should be hunted down, and Killed, ( I mean brought to justice ).  The guys over at Project Honey Pot are leading the fight against spam.  They have setup a HTTP Blacklist that developers can use to validate their visitors IP.  The only problem is writing some code to utilize it might be a little advanced for some.  I have created an HTTP Module for ASP.NET that will validated your visitors before they get into your site.  I even commented my code ( something I usually don't do ), so others can learn.  Give it a try and let me know what you think. 

Dictionary attack IP list

Mar 31, 2008 by Paul White

This is a list of IPs that tried to send email to users that don't exist on one of my client's sites.  SmarterMail can be setup to reject these IPs after X failed attempts.  Feel free to add these to your blacklists.

How to stop Real Player from downloading your videos with ASP.NET

Mar 11, 2008 by Paul White

Coming soon!!  Even though you can never block computer savy people from downloading your videos. The latest Real Player makes it so easy that even a computer handicaped person could download videos from your members sites.  After some hacking I figured out how to bock Real Player from stealing your videos.  All I am going to say is it involves an Http Handler, and an ISAPI entry to manage your .MPG extensions.  I should have a full write up on how to do this within a few days.

Stop Hackers and Spam Bots in IIS

Mar 1, 2008 by Paul White


If you get a ton of server errors in your event logs in IIS. You might be under attack from hackers and spam bots attempting to inject comments and links in your submit forms.  The notorious Viewstate Failed Error seems to be the result of their attempts.  I have found an awesome resource to take care of this, and block these rejects for good. 

Auto Block hackers IPs from your FTP Server IIS

Oct 31, 2007 by Paul White


I get a couple attempts by hackers to use brute force to get into my websites via FTP. I found this neat little windows service, that quickly takes care of this problem.