On 05-18-2021 1:46 pm, Juerg Reimann wrote:
How can I allow him to send his newsletter, even though many false, no
longer valid email addresses? Preferably I'd like to only allow

I always wondered why my mail server gets repeatedly spammed with invalid email addresses from spamsters. I wondered why they didn't realize it wasn't a valid address and was never going to be delivered. Now i know, there are services that encourage them to be lazy with their spam list.

I know im being a little snarky, but come on man, if a large percentage of the addresses bounce its obviously not a list of emails people opted into. If im out of line i apologize and will refrain from similar replies in the future.

In a utopia world, they could be asked to clean up their mailing list removing invalid addresses.

In your case, one suggestion would be to catch the bounces, compile your own database of invalid addresses, run out going emails through a policy server comparing the To: address to your database of known bad addresses and stop postfix from trying to deliver those messages.

So the question is, who does the work? Them or you?

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