Mail reverse DNS check, what Jarl adds to named.conf, lists one per line

jarld checks the reverse DNS of the public zones' MX and SPF addresses as the internet sees it, every 6 hours (Exposure page, jarl exposure mail, jarl_mail_reverse_dns_ok). The Server options page, jarl option generated and GET /options/generated list what Jarl writes into named.conf by itself; stats.rate_limit_log turns off the query-errors logging. Option lists of three or more elements are shown one per line.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/cli.md

@@ -405,6 +405,7 @@ jarl exposure                                         # public views, findings,
 jarl exposure fix external exposure_rate_limit        # rate limiting, log-only first
 jarl exposure fix external exposure_rate_limit_log_only   # then start enforcing
 jarl exposure fix server exposure_version
+jarl exposure mail                                   # reverse DNS of the addresses that send and receive mail
 jarl exposure ack external security_open_resolver --reason "public resolver, monitored"
 jarl exposure unack external security_open_resolver
 jarl view update external --exposure public|private|auto
@@ -476,6 +477,7 @@ jarl option set logging '{ channel q { file "/var/log/named/query.log" versions
 jarl option unset forwarders
 jarl option describe                          # every option allowed at this scope
 jarl option describe allow-query-cache        # grammar and ARM description
+jarl option generated                         # what Jarl adds to named.conf by itself, and why
 ```
 
 Options that end in a list (`allow-*`, `forwarders`, `listen-on`, ...) may