dnssec_require_domains, dnssec_request_domains, srv_fail_domains,
mx_fail_domains.
+JH/45 Use a (new) separate store pool-pair for DKIM verify working data.
+ Previously the permanent pool was used, so the sore could not be freed.
+ This meant a connection with many messages would use continually-growing
+ memory.
+
Exim version 4.94
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