On 22/10/17 18:25, Henry wrote: > Does this mean, in the scenario above, that I am receiving a spam > message
It may or may not be SPAM, I don't have enough evidence to confirm one way or the other. > i.e. "zvnpozz...@brev.krcnet.com" and the mail server is > bouncing it because it is over quota, Yes. > so effectively I am sending a > reply to the spammer confirming my email address is valid? No, you are sending a reply to the original envelope sender. This might be the actual sender, but if it's SPAM then more than likely it is spoofed to some innocent person's email address. So the bounce from your server is going to someone else entirely. This is backscatter and is a very bad thing to be doing as you're basically forwarding the SPAM or at least sending a message about he SPAM to some innocent 3rd party. > Ok, found a mailbox at 100% in it's spam folder. Emptied the spam > folder and not monitoring the outbound. I expect to see a reduction in > bounced mail now. I was not hacked YEAH :) That is a good start. > Next is to fix the my quota system and who it bounces messages incorrectly. You need to fix it so it rejects instead of bounces. That is how you avoid becoming a source of backscatter. Peter
