On 28/05/2024 11:39, Christophe Kalt via Postfix-users wrote:
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.
For this to be worthwhile, I assume you also set smtpd_delay_reject to
no ?
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yes, I set it in master.cf just for submission service.
John
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