-
-.ti -.5i
-masquerade:
-.br
-This directive controls three different types of email address masquerading.
-The three possible values, which may be specified in any combination on the
-line, separated by spaces, are "draft_from", "mmailid", and
-"username_extension".
-
-"mmailid" was the only type of masquerading in the original MH package, and
-apparently stands for "masquerade mail identification". This type of
-masquerading keys off of the GECOS field of the passwd file. When enabled,
-\fInmh\fR will check if the user's pw_gecos field in the passwd file is of the
-form:
-
-.ti +.5i
-Full Name <fakeusername>
-
-If it is, the internal \fInmh\fR routines that find the username and full name
-of that user will return "fakeusername" and "Full Name" respectively. This is
-useful if you want the messages you send to always appear to come from the name
-of an MTA alias rather than your actual account name. For instance, many
-organizations set up "First.Last" sendmail aliases for all users. If this is
-the case, the GECOS field for each user should look like:
-
-.ti +.5i
-First [Middle] Last <First.Last>
-
-"username_extension", when specified on the "masquerade:" line, allows a second
-type of username masquerading. If the user sets the \fB$USERNAME_EXTENSION\fR
-environment variable, its value will be appended to the actual login name. For
-instance, if I am dan@company.com, and I set \fB$USERNAME_EXTENSION\fR to
-"\-www", my mail will appear to come from "dan\-www@company.com". This is meant
-to interact with qmail's "user\-extension" feature, where mail sent to
-\fIuser\fR\-\fIstring\fR will be delivered to \fIuser\fR. Likewise, those using
-versions of sendmail for which "plussed user" processing is active can set
-\fB$USERNAME_EXTENSION\fR to "+\fIstring\fR". These MTA features are useful
-because they allow one to use different email addresses in different situations
-(to aid in automatic mail filtering or in determining where spammers got one's
-address) while only actually having a single account. Note that
-\fB$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
-rather than constructing its own. However, to discourage email forgery, the
-SMTP envelope "From:" and a "Sender:" header are set to the user's real address.
-When "draft_from" is turned on, though, the envelope "From:" will use the
-address specified in the draft, and there will be no "Sender:" header. This is
-useful when a user wants to pretend to be sending mail "directly" from a remote
-POP3 account, or when remote mail robots incorrectly use the envelope "From:" in
-preference to the body "From:" (or refuse to take action when the two don't
-match). Note that the MTA may still reveal the user's real identity (e.g.
-sendmail's "X\-Authentication\-Warning:" header).
-
-.ti -.5i
-maildelivery: %libdir%/maildelivery
-.br
-The name of the system-wide default \fI\&.maildelivery\fR file.
-See \fIslocal\fR\0(1) for the details.
-
-.ti -.5i
-everyone: 200
-.br