-% public-inbox-mda(1) public-inbox user manual
-
=head1 NAME
-public-inbox-mda - mail delivery for public-inbox
+public-inbox-mda - mail delivery agent for public-inbox
=head1 SYNOPSIS
-B<public-inbox-mda> E<lt> message
+ public-inbox-mda </path/to/RFC2822_message
=head1 DESCRIPTION
Mail Delivery Agent (MDA) for public-inbox installations.
-Each system user may have their own public-inbox instances
+Each system user may have their own public-inbox instances.
+This may be invoked via L<procmail(1)> or similar tools.
+
+By default, it relies on L<spamc(1)> for filtering mail,
+but may be disabled via
+L<public-inbox-config(5)/publicinboxmda.spamcheck>
+
+=head1 OPTIONS
+
+=over 8
+
+=item --no-precheck
+
+By default, public-inbox-mda does some simple checks before
+invoking L<spamc(1)> since it is intended to receive mail before
+it goes to a mailing list.
+
+However, some users prefer to use public-inbox-mda to mirror
+mailing lists. This option exists to support those users.
+
+Using this option, the following prechecks are disabled:
+
+ * multiple Message-IDs
+ * non-existent Message-IDs
+ * Message-IDs longer than 244 characters long
+ * From: header shorter than 3 characters
+ * Subject: header shorter than 2 characters
+ * unusable Date: headers
+ * inbox address specified in To: or Cc: header
+
+=back
=head1 ENVIRONMENT
=item ORIGINAL_RECIPIENT
-the original recipient email address, from Postfix
+The original recipient email address, set by the MTA. Postfix
+sets it by default, untested on other MTAs.
+
+This does not have to be set if relying on C<publicinbox.$NAME.listid>
+directives configured in L<public-inbox-config(5)>.
=item PI_CONFIG
-config file. default: ~/.public-inbox/config
+Per-user config file parseable by L<git-config(1)>.
+See L<public-inbox-config(5)>.
+
+Default: ~/.public-inbox/config
=item PI_EMERGENCY
-emergency destination. default: ~/.public-inbox/emergency/
+emergency Maildir destination.
+
+Default: ~/.public-inbox/emergency/
=back
-=head1 PI_CONFIG FILE
-This is a config file parseable by L<git-config(1)>.
+=head1 CONTACT
+
+Feedback welcome via plain-text mail to L<mailto:meta@public-inbox.org>
+
+The mail archives are hosted at L<https://public-inbox.org/meta/>
+and L<http://hjrcffqmbrq6wope.onion/meta/>
+
+=head1 COPYRIGHT
+
+Copyright 2013-2020 all contributors L<mailto:meta@public-inbox.org>
+
+License: AGPL-3.0+ L<https://www.gnu.org/licenses/agpl-3.0.txt>
+
+=head1 SEE ALSO
+
+L<git(1)>, L<git-config(1)>, L<public-inbox-v1-format(5)>