On Mon, 16 Jan 2012 18:20:39 +0200, Mark Sapiro mark@msapiro.net wrote:
On 11:59 AM, IVO GELOV (CRM) wrote:
The limitation of 1 message per week for any unique combination of sender/recipient does not stop backscatter - because each message can come with a new forged FROM address, and from different compromised mail servers. The spammer does not have control over the body of the auto-replies (which is something like "I am not at the office, please write to my colleagues"), but it still may cause the victims to take some measures.
All true, but the sender in the sender/recipient combination is the forged From: that ultimately receives the backscatter and the recipient is your local user who set the vacation autoresponse. If you only have one or two local users on vacation at a time, any given backscatter recipient could receive at most one or two backscatter messages per week regardless of how many compromised servers the spammer sends from. And this assumes the spam is initially sent to multiple local users on vacation and gets past your local spam filtering.
I don't know about you, but I have more significant potential backscatter sources to worry about.
I see your point and I agree with you this is a minor problem. Thanks for your time, Mark.
Best wishes, Ivo Gelov