Hello list,
yes, I ran into the problem, that Spamhaus stopped supporting public DNS
resolvers:
Service unavailable; Client host [xxxx::] blocked using zen.spamhaus.org;
Error: open resolver;
Please update the documentation [1] about smtpd_recipient_restrictions:
reject_rbl_client zen.spamhaus.org=127.0.0.[2..11]
... etc
[2]
and drop a bold warning not to use a public DNS!
regards
Christoph Rudorff
[1] https://www.postfix.org/SMTPD_ACCESS_README.html#lists
[2]
https://docs.spamhaus.com/datasets/docs/source/40-real-world-usage/PublicMirrors/MTAs/020-Postfix.html
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