Don't accept mail from home networks. For example, use "reject_dbl_client
zen.spamhaus.org".  For this you must use your own DNS resolver,
not the DNSresolver from your ISP.

On 23.05.24 07:00, Northwind via Postfix-users wrote:
will this also stop the valid client's SMTP connection? thank you Wietse.

On 2024-05-23 at 02:31:05 UTC-0400 (Thu, 23 May 2024 08:31:05 +0200)
Matus UHLAR - fantomas via Postfix-users <uh...@fantomas.sk>
is rumored to have said:
not, unless they are listed in zen.spamhaus.org, which should not happen.

On 23.05.24 09:45, Bill Cole via Postfix-users wrote:
Zen includes the "PBL" component, which consists largely of residential and mobile consumer IPs.

Yes, but these are (usually) not considered valid clients, these should use submission/submissions(smtps) ports where reject_rbl_client and/or zen.spamhaus.orgshould not be used.

--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
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