Recent decrease in Reputation Filtering

oh_ironport · ‎11-14-2007

Beginning yesterday (Nov 13) at about 17:00 eastern time, we have seen a drastic decrease in messages stopped by Reputation Filtering and an large increase in Spam Detected. The drop is from about 97% to 89%. Spam Detected has risen from 1.4% to 7.6%

Anyone else seeing this occur? We are using V5.1.2 of AsyncOS.

Seth Miller · ‎11-15-2007

I noticed ours droped over the last two days from 80% - 69%. not sure why...

oh_ironport · ‎11-15-2007

After 24 hours, the rejected message percent returned to their normal (excellent) levels.

prash_ironport · ‎11-19-2008

The efforts of security researchers have resulted in Mc Colo's hosting service being stopped, and this has resulted in far less spam being sent. :) However, it won't last long. Witihin a couple of wweks, the spam levels will be back to usual...

http://www.eweek.com/c/a/Security/Notorious-Web-Hosting-Service-Linked-to-Spam-Campaigns-Goes-Offline/

http://www.senderbase.org/home/detail_spam_volume?displayed=lastmonth&action=&screen=&order=

jmonrad · ‎11-22-2008

The efforts of security researchers have resulted in Mc Colo's hosting service being stopped, and this has resulted in far less spam being sent.  :) However, it won't last long. Witihin a couple of wweks, the spam levels will be back to usual... 

http://www.eweek.com/c/a/Security/Notorious-Web-Hosting-Service-Linked-to-Spam-Campaigns-Goes-Offline/

 http://www.senderbase.org/home/detail_spam_volume?displayed=lastmonth&action=&screen=&order=

Which is about now.. I can point to www.senderbase.org and more specifically to : http://www.senderbase.org/home/detail_spam_volume

looks like spam has returned to its "normal" volumes.