[Cialug] damn spammers

[Dave Weis]

neal daringer wrote:
> Dave Weis wrote:
>>
>> My little mail forwarding experiment is working well. I was going 
>> through the logs and between Nov 4 at 6 AM and now it's dropped 2.4 
>> million emails. There have been a whopping 117 legitimate emails 
>> forwarded onward.

> what praytell is this experiment? and how does it work?

I have a customer domain that has 3-4 addresses that get forwarded to 
real people. Someone combined the domain with every possible left hand 
side of an email address and has been hitting it with spam for a few 
months. It finally got to the point that the real server was having 
problems dealing with the load. I had asked for some help a few weeks 
ago and have postfix tightened up to drop a lot of the junk. A large 
part of the problem is that it was taking in email and sending an 
asynchronous bounce instead of an immediate 550 and discarding the message.

dave