My suggestion, which most don't people buy into, is don't worry about giving a response to a spammer. They are not going to magically drop your address just because they have not heard from you in 2 years. If it doesn't bounce you will be kept on the list and the e-mail list likely be sold. Go about your business and don't worry about sending confirmation to spammers.
If you want another suggestion that people really don't like, Reject with Notification to anybody posting to the list, but they are not a member. I know - the reply sent to them is awful, but that is what I do for all my lists.
Mike
On 8/26/2018 2:54 PM, David Krantz wrote:
Hi,
I have a spam-problem like anyone else. Most of the spam my listserver receives has some kind of impilict destination so the implicit rule catches most of the spam that way. This is fine. What is not so fine, however, is that this results in a moderation message to the sender. I'd like to stop that so that the spammer has no confirmation that the mail was received.
I can probably stop this in postfix before the mail reaches mailman3, but I'd prefer changing the behaviour of the rule. Is there any setting that could be used or should I just modify the rule?
Cheers. // David