>>> host in hosts_connection_nolog? no (option unset)
>>> host in host_lookup? no (option unset)
>>> host in host_reject_connection? no (option unset)
>>> host in sender_unqualified_hosts? no (option unset)
>>> host in recipient_unqualified_hosts? no (option unset)
>>> host in helo_verify_hosts? no (option unset)
>>> host in helo_try_verify_hosts? no (option unset)
>>> host in helo_accept_junk_hosts? no (option unset)
>>> host in smtp_accept_max_nonmail_hosts? yes (matched "*")
>>> using ACL "check_etrn"
>>> processing "deny"
>>> check hosts = !localhost
MUNGED: ::1 will be omitted in what follows
>>> get[host|ipnode]byname[2] looked up these IP addresses:
>>>   name=localhost address=127.0.0.1
>>> host in "!localhost"? no (matched "!localhost")
>>> deny: condition test failed in ACL "check_etrn"
>>> processing "warn"
>>> l_message: accepted $smtp_command
>>> warn: condition test succeeded in ACL "check_etrn"
LOG: H=[127.0.0.1] Warning: accepted etrn #some.random.domain
>>> processing "accept"
>>> accept: condition test succeeded in ACL "check_etrn"
>>> end of ACL "check_etrn": ACCEPT
>>> ETRN command is: exim -R
>>> ETRN command execution skipped