Thursday, January 25, 2007
More spam processing
We have made an adjustment to our spam scanning servers.
Mails that are getting past the various publicly available remote block list checks that are being passed on to our modified Spam Assassin (we check this at SMTP time, so we are able to reject BEFORE accepting - which is pretty neat really). All high scoring mails are being stored with domain and source IP. This is being punched into a database and in turn into a zone file, allowing us to create our very own RBL listing.
Multiple occurrences of different mails from the same IP are being counted giving us a little statistical background.
For all those 'nay sayers' out there; We are currently rejecting around 89% (24th Jan 07 a primary mx machine took 6262 mail transactions. 550 were dropped, 41974 were rejected*) of inbound mail to our anti spam cluster, and that's BEFORE we accept the mails for further processing.
We thought we would like to share a little success story with you.
Drop us a mail to find out more about our spam scanning configuration or applying it to your domain.
*These figures were double checked since even we found them hard to believe.
Mails that are getting past the various publicly available remote block list checks that are being passed on to our modified Spam Assassin (we check this at SMTP time, so we are able to reject BEFORE accepting - which is pretty neat really). All high scoring mails are being stored with domain and source IP. This is being punched into a database and in turn into a zone file, allowing us to create our very own RBL listing.
Multiple occurrences of different mails from the same IP are being counted giving us a little statistical background.
For all those 'nay sayers' out there; We are currently rejecting around 89% (24th Jan 07 a primary mx machine took 6262 mail transactions. 550 were dropped, 41974 were rejected*) of inbound mail to our anti spam cluster, and that's BEFORE we accept the mails for further processing.
We thought we would like to share a little success story with you.
Drop us a mail to find out more about our spam scanning configuration or applying it to your domain.
*These figures were double checked since even we found them hard to believe.
# posted by Netserve @ 11:18 AM 
