World’s Most Advanced Spam Filtering Technology
Dear MX Backup Users, I am contacting you today to let you know about changes to our free MX Backup service. We have implemented a new feature that automatically detects if your normal server is active and will return a 4xx error on the backup server if it is. We only accept and store email [...]
I’ve been doing more work on my outbound spam filter lately. I’m good at catching a hacked account but it was taking me 3 minutes to figure out that the account was hacked. This allowed the spammer to get a few thousand outbound spams off and that wasn’t good enough. But when you first see [...]
I have made a LOT of progress recently filtering outgoing spam. Outgoing spam filtering is very different than incoming spam and requires a new strategy. But I’ve figured out a few easy rules that seem to work very well. As you all know I prefer behavior based rules rather than content based rules (like SpamAssassin). [...]
I’ve been thinking about what it would take to actually eliminate spam or reduce it to less than 10% of what it is now. One of the problems is the SMTP protocol itself. And a big problem with that is that mail servers talk to each other using the same protocol as users use to [...]
I’ve noticed a sharp increase in spam coming from Yahoo, Hotmail, Gmail and other free mail providers. Not sure what the cause is but the spammers are gaining ground on these services.
We are getting into the business of filtering outgoing email and relaying outgoing email. If you are interested in this new service pleace contact support@junkemailfilter.com and we’ll get you set up.
We now have what I think is the fastest spam bot detection on the planet. Our blacklist are now listing over a million spam bots that have tried to spam us in the last 4 days. We only keep 4 days of data because if we get something wrong or someone fixes their virus problem [...]
Made an interesting observation on Friday that spam bots don’t do a QUIT at the end of an SMTP session. Real email servers are polite and after the message is sent they send a QUIT commant to tell the receiving server to close the connection. Spam bots however don’t send the quit command because the [...]
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Bad Behavior has blocked 13 access attempts in the last 7 days.
