BRACKET
USE_FLOCK
USE_ORIGINAL_MESSAGE_ID
ML_MEMBER_CHECK
AUTO_REGISTERED_UNDELIVER_P
ERRORS_TO
REJECT_ADDR
SKIP_FIELDS
SENDMAIL
COMMAND_SYNTAX_EXTENSION
PROHIBIT_COMMAND_FOR_STRANGER
NEWSYSLOG_MAX
WHOIS_JCODE_P
CRON_NOTIFY
REMOTE_ADMINISTRATION_REQUIRE_PASSWORD
CHECK_MESSAGE_ID