.in +.5i
.ti -.5i
+mts:
+.br
+The mail transport method to use. The two acceptable options are \fBsmtp\fP
+(which is the default), and \fBsendmail\fP.
+
+If you use \fBsmtp\fP, this will enable a direct SMTP (simple mail transport
+protocol) interface in \fInmh\fR. When sending mail, instead of passing the
+message to the mail transport agent, \fIpost\fR will open a socket connection
+to the mail port on the machine specified in the \fIservers\fR entry.
+
+If you use \fBsendmail\fP, then \fIpost\fR will send messages by forking a
+local copy of sendmail. Currently it will still speak SMTP with this local
+copy of sendmail.
+
+.ti -.5i
localname:
.br
The hostname \fInmh\fR considers local. It should typically be a fully
\fB$USERNAME_EXTENSION\fR to "+\fIstring\fR". These MTA features are useful
because they allow one to use different email addresses in different situations
(to aid in automatic mail filtering or in determining where spammers got one's
-address) while only actually having a single account.
+address) while only actually having a single account. Note that
+\fB$USERNAME_EXTENSION\fR is only appended to the username when \fIpost\fR is
+generating "[Resent\-]From:" lines and the SMTP envelope "From:". \fIinc\fR,
+for instance, will not try to read from a maildrop file called "dan\-www" (to
+recall the earlier example).
"draft_from" controls the most powerful type of address masquerading. Normally,
when a user explicitly specifies a "From:" header in a draft, \fInmh\fR uses it
.in -.5i
.Uh "SMTP support"
-These options are only available if you compiled \fInmh\fP with the
-\*(lq/smtp\*(rq support.
+These options are only available if you set \fImts\fR to \fBsmtp\fP.
.in +.5i
.ti -.5i
.in -.5i
.Uh "SendMail"
-This option is only available if you compiled \fInmh\fP to use
-\fISendMail\fP as your delivery agent.
+This option is only available if you set \fImts\fR to \fBsendmail\fP.
.in +.5i
.ti -.5i
.in -.5i
.Uh "Post Office Protocol"
This option is only available if you have compiled \fInmh\fP with POP
-support enabled (i.e., \*(lq--enable-nmh-pop\*(rq).
+support enabled (i.e., \*(lq--enable-pop\*(rq).
.in +.5i
.ti -.5i