On 3 Mar 2019, at 14:54, Mayhem wrote:

No, the manual states "Drop the connection immediately with a 521 SMTP reply"
and that's not happening.

The 521 drop comes *after* the pregreet and DNSBL checks.

Because the basis for the drop IS the DNSBL checks. Postscreen cannot drop a connection because of a test it does not perform.


Mar 3 09:59:54 localhost postfix/dnsblog[84376]: addr 85.54.217.239 listed
by domain zen.spamhaus.org as 127.0.0.11
Mar 3 09:59:54 localhost postfix/dnsblog[84376]: addr 85.54.217.239 listed
by domain zen.spamhaus.org as 127.0.0.4
Mar 3 10:00:00 localhost postfix/postscreen[84375]: PASS pregreet test
[85.54.217.239]:5089
Mar  3 10:00:00 localhost postfix/postscreen[84375]: DNSBL rank 2 for
[85.54.217.239]:5089
Mar  3 10:00:00 localhost postfix/postscreen[84375]: FAIL
[85.54.217.239]:5089
Mar  3 10:00:00 localhost postfix/postscreen[84375]: DROP
Mar 3 10:00:00 localhost postfix/postscreen[84375]: > [85.54.217.239]:5089:
521 5.7.1 Service unavailable



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