On Thu, 2004-04-22 at 11:44, Gilbert, Joseph wrote: > I strongly agree with your statements on this. Surbl is a good tool but > 'John Anderson' does not need to respond to every post with "Don't use > razor... use surbl.org," especially since this is a list for razor. > > Since implementing both razor and surbl my efficiency ratings have really > increased into a range where spam filtering looks viable.
I concur. I decided to run both techniques as an experiment, on a spamtrap that receives about 600 messages per day. After two days, I have the following: [EMAIL PROTECTED] mail]# grep spam_scan /var/log/mail/info | grep -c -P RAZOR.+SPAMCOP_URI 70 [EMAIL PROTECTED] mail]# grep spam_scan /var/log/mail/info | grep -c -P RAZOR 253 [EMAIL PROTECTED] mail]# grep spam_scan /var/log/mail/info | grep -c -P SPAMCOP_URI 249 Each technique identified apprximately the same number of messages, with only a ~16% overlap. It appears to me that they are complimentary filtering techniques and that I should run both. Looking at just one mail domain, I found: 620 total spams detected 29 detected using razor but not surbl nor a sufficient number of other SpamAssassin tools 56 detected using razor that ordinary SpamAssassin would have filtered. 45 detected using surbl but not razor nor a sufficient number of other SpamAssassin tools 20 detected using surbl that ordinary SpamAssassin would have filtered. 50 detected by both 420 detected by other SpamAssassin rules The net gain is about 8%, so it doesn't look quite so dramatic, but it is still a complimentary approach that is worth adding to the mix. -- Daniel J McDonald, CCIE #2495 Austin Network Design http://www.austinnetworkdesign.com ------------------------------------------------------- This SF.net email is sponsored by: The Robotic Monkeys at ThinkGeek For a limited time only, get FREE Ground shipping on all orders of $35 or more. Hurry up and shop folks, this offer expires April 30th! http://www.thinkgeek.com/freeshipping/?cpg=12297 _______________________________________________ Razor-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/razor-users
