I tried to upgrade to Exim 4.96 using recently updated FreeBSD port,
but got errors in paniclog:
2023-05-30 11:11:45 +0300 ACL for not-QUIT returned ERROR: failed to expand ACL
string "${run{/bin/sh -c 'echo \\\"$sender_host_address${if
match{$sender_host_address}{:}{/56}}\\\" >>$spool_directory/blocked_IPs; \N{\N
echo Subject: blocked $sender_host_address $acl_c_country ${sg{${lookup
dnsdb{>, defer_never,ptr=$sender_host_address}}}{\N[^\w.,-]\N}{}}; echo; echo
for bruteforce auth cracking attempt.; \N}\N | $exim_path -f root
l...@lena.kiev.ua'}}": Expansion of "echo \\\"$sender_host_address${if
match{$sender_host_address" from command "/bin/sh -c 'echo
\\\"$sender_host_address${if match{$sender_host_address" in ${run} expansion
failed: missing } at end of string
because expand.c needs the patch "Fix ${run } arg parsing":
https://git.exim.org/exim.git/commitdiff/44b6e099b76f403a55e77650821f8a69e9d2682e
But that patch fails. It needs another patch applied before that:
"Args count reduction in expansions coding"
https://git.exim.org/exim.git/commitdiff/d8fbda7da9eb20f98b89f625e8a77eacc443757d
But that patch also fails. I gave up and returned to 4.95.
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