extern char *ctxpath; /* pathname of user's context */
extern struct node *m_defs; /* list of profile/context entries */
+/* What style to use for generated Message-ID and Content-ID header
+ fields. The localname style is pid.time@localname, where time is
+ in seconds. The random style replaces the localname with some
+ (pseudo)random bytes and uses microsecond-resolution time. */
+int save_message_id_style (const char *);
+char *message_id (time_t, int);
+
/*
* These standard strings are defined in config.c. They are the
* only system-dependent parameters in nmh, and thus by redefining