.RB [ \-forward " | " \-noforward ]
.RB [ \-mime " | " \-nomime ]
.RB [ \-msgid " | " \-nomsgid ]
+.RB [ \-messageid
+.IR localname " | " random ]
.RB [ \-push " | " \-nopush ]
.RB [ \-split
.IR seconds ]
.RB [ \-verbose " | " \-noverbose ]
.RB [ \-watch " | " \-nowatch ]
+.RB [ \-mts
+.IR smtp " | " sendmail/smtp " | " sendmail/pipe ]
.RB [ \-server
.IR servername ]
.RB [ \-port
is specified, then a \*(lqMessage\-ID:\*(rq field will also
be added to the message.
.PP
+The
+.B \-messageid
+switch selects the style used for the part appearing after the @
+in \*(lqMessage\-ID:\*(rq, \*(lqResent\-Message\-ID:\*(rq, and
+\*(lqContent\-ID:\*(rq header fields. The two acceptable options are
+.B localname
+(which is the default),
+and
+.BR random .
+With
+.BR localname ,
+the local hostname is used. With
+.BR random ,
+a random sequence of characters is used instead. Note that the
+.B \-msgid
+switch must be enabled for this switch to have any effect.
+.PP
If
.B send
is re\-distributing a message (when invoked by
.B send
as to how long it should make header lines containing addresses.
.PP
+The mail transport system default is provided in
+.I %etcdir%/mts.conf
+but can be overriiden here with the
+.B \-mts
+switch.
+.PP
If nmh is using the SMTP MTA, the
.B \-server
and the
.RB ` \-forward '
.RB ` \-nomime '
.RB ` \-nomsgid '
+.RB ` "\-messageid\ localname" '
.RB ` \-nopush '
.RB ` \-noverbose '
.RB ` \-nowatch '