On Sun, May 26, 2024 at 5:57 AM John Fawcett via Postfix-users <
postfix-users@postfix.org> wrote:
For submission I only use xbl (return code 127.0.0.4) excluding other
other data contained in zen like pbl that lists isp dynamic ip ranges from
which you would normally expect to get connections to submission. For me
it's safe to use xbl for submission since I don't want connections from
exploited machines and it cuts out most of the noise and some of the risk
from people hammering smtp auth. It won't fit everyone's use case though.
On 28.05.24 05:39, Christophe Kalt via Postfix-users wrote:
For this to be worthwhile, I assume you also set smtpd_delay_reject to no ?
Good point. But only on smtps/submission level, so in master.cf services.
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