dns_retrans time 0s main 1.60
dns_retry integer 0 main 1.60
dns_search_parents boolean false smtp
+dns_use_dnssec integer -1 main 4.81
dns_use_edns0 integer -1 main 4.76
domains domain list unset routers 4.00
driver string unset authenticators
unset routers 4.00
unset transports
drop_cr boolean false main 4.00 became a no-op in 4.21
+dscp string unset smtp 4.81
dsn_from string* + main 4.67
envelope_to_add boolean false transports
envelope_to_remove boolean true main
tls_certificate string* unset main 3.20
unset smtp 3.20
tls_dh_max_bits integer 2236 main 4.80
+tls_dh_min_bits integer 1024 smtp 4.81
tls_dhparam string* unset main 3.20
tls_on_connect_ports string unset main 4.43
tls_privatekey string* unset main 3.20
-bh Test incoming SMTP call, omitting callouts
-bhc Test incoming SMTP call, with callouts
-bi * Run <command>bi_command</command>
+-bI:help Show list of accepted -bI:<tag> options
-bm Accept message on standard input
-bmalware + Invoke configured malware scanning against supplied filename
-bnq Don't qualify addresses in locally submitted messages
DELIVER_IN_BUFFER_SIZE optional*
DELIVER_OUT_BUFFER_SIZE optional*
DISABLE_DKIM optional disables DKIM support
+DISABLE_DNSSEC optional disables attempts to use DNSSEC
DISABLE_D_OPTION optional disables -D option
ERRNO_QUOTA optional* error code for system quota failures
EXICYCLOG_MAX optional number of old log files to keep