message_body_visible integer 500 main
message_id_header_domain string* unset main 4.11
message_id_header_text string* unset main
+message_linelength_limit integer 998 smtp 4.94
message_logs boolean true main 4.10
message_prefix string* + appendfile 4.00 replaces prefix
string* unset pipe 4.00 replaces prefix