On 9/9/22 3:24 am, Simon Hobson wrote:
Marjorie Roome via Dng <dng@lists.dyne.org> wrote:I configure strict postfix rules that incoming mail should have a reverse DNS.I find grey-listing to be by far the most effective spam blocker.
I use postscreen rather than grey-listing. It does much the same delay function as grey-listing but also does timing and protocol violation checks
https://www.postfix.org/POSTSCREEN_README.html https://www.linuxbabe.com/mail-server/configure-postscreen-in-postfix-to-block-spambotsIt does require a few minutes thinking about your master.cf structure, but that's a good thing anyway.
-- Jeremy
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