+ | MsgSmtpLogReq of string
+ (* Request all current SMTP log lines about a domain *)
+ | MsgSmtpLogRes of string
+ (* One line of a response to MsgSmtpLogReq *)
+ | MsgDbPasswd of {dbtype : string, passwd : string}
+ (* Change a DBMS user's password *)
+ | MsgShutdown
+ (* Halt the server *)
+ | MsgYes
+ | MsgNo
+ (* Answers to boolean queries *)
+ | MsgQuery of query
+ (* Ask for host-specific information *)
+ | MsgSocket of socket_permission
+ (* Answer to a QSocket query *)
+ | MsgFirewall of string list
+ (* Answer to a QFirewall query *)
+ | MsgRegenerateTc
+ (* MsgRegenerate without actual publishing of configuration *)
+ | MsgGrantDb of {dbtype : string, dbname : string}
+ (* Grant all allowed privileges on a DBMS database to the user *)