I re-ask again since my postscreen responds to connections with dnsbl code 450 instead of a 5xx, with which those servers are trying to resend the mail again and again
postfix/submission/postscreen[1724625]: NOQUEUE: reject: RCPT from [XXX.XXX.XXX.XXX]:46994: 450 4.7.1 Service unavailable; client [XXX.XXX.XXX.XXX] blocked using zen.spamhaus.org; from=<laurel.trinklein-nazcar=almogavers....@shifts.top>, to=<naz...@almogavers.net>, proto=ESMTP, helo=<mail.shifts.top> this my conf: postscreen_dnsbl_sites = zen.spamhaus.org=127.0.0.[2..11]*3 bl.spamcop.net swl.spamhaus.org*-4 all.bl.blocklist.de ef2183f1b6e9b2710f1e3516bcb691b5.combined.mail.abusix.zone postscreen_dnsbl_reply_map = texthash:/etc/postfix/postscreen_dnsbl_reply postscreen_access_list = permit_mynetworks cidr:/etc/postfix/trusted_ips.cidr postscreen_greet_action = enforce postscreen_greet_banner = postscreen_greet_wait = 20s postscreen_dnsbl_action = enforce postscreen_blacklist_action = drop postscreen_dnsbl_whitelist_threshold = -1 postscreen_dnsbl_ttl = 10m cat /etc/postfix/postscreen_dnsbl_reply # Secret DNSBL name Name in postscreen(8) replies El 8/6/2021 a las 14:42, Francesc Peñalvez escribió: > The question may have been answered, but I don't see it. Is there a way > to change the 4xx error from postscreen to error 5xx so that it doesn't > retry to send the mail blocked by dnsbl >
smime.p7s
Description: Firma criptográfica S/MIME
