Indeed they shouldn't. The most noteworthy implementation that seems to
treat these as false positives is cPanel, I believe. Every single day we
run into no less than 3-5 servers which reject emails from us, claiming
that we're listed on SH. They seem to almost always be cPanel boxes.
On 2022-11-04 08:11, Jaroslaw Rafa via mailop wrote:
Dnia 4.11.2022 o godz. 12:52:44 L. Mark Stone via mailop pisze:
Queries to spamhaus.org from the public DNS resolvers fail, leading to
false positives.
They should not lead to false positives, because one should not treat
the
results Spamhaus returns in this case (127.255.255.254 or
127.255.255.255)
as positives at all. Positive replies from Spamhaus (in case of IP
address
checks) are in range 127.0.0.0/24 ONLY, which is clearly explained
here:
https://www.spamhaus.org/faq/section/DNSBL%20Usage#200
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