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diff --git a/rt/lib/RT/Interface/Email/Filter/SpamAssassin.pm b/rt/lib/RT/Interface/Email/Filter/SpamAssassin.pm
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+++ b/rt/lib/RT/Interface/Email/Filter/SpamAssassin.pm
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+# BEGIN LICENSE BLOCK
+# 
+# Copyright (c) 1996-2003 Jesse Vincent <jesse@bestpractical.com>
+# 
+# (Except where explictly superceded by other copyright notices)
+# 
+# This work is made available to you under the terms of Version 2 of
+# the GNU General Public License. A copy of that license should have
+# been provided with this software, but in any event can be snarfed
+# from www.gnu.org.
+# 
+# This work is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# Unless otherwise specified, all modifications, corrections or
+# extensions to this work which alter its source code become the
+# property of Best Practical Solutions, LLC when submitted for
+# inclusion in the work.
+# 
+# 
+# END LICENSE BLOCK
+package RT::Interface::Email::Filter::SpamAssassin;
+
+use Mail::SpamAssassin;
+my $spamtest = Mail::SpamAssassin->new();
+
+sub GetCurrentUser {
+    my $item = shift;
+    my $status = $spamtest->check ($item);
+    return (undef, 0) unless $status->is_spam();
+    eval { $status->rewrite_mail() };
+    if ($status->get_hits > $status->get_required_hits()*1.5) { 
+        # Spammy indeed
+        return (undef, -1);
+    }
+    return (undef, 0);
+}
+
+=head1 NAME
+
+RT::Interface::Email::Filter::SpamAssassin - Spam filter for RT
+
+=head1 SYNOPSIS
+
+    @RT::MailPlugins = ("Filter::SpamAssassin", ...);
+
+=head1 DESCRIPTION
+
+This plugin checks to see if an incoming mail is spam (using
+C<spamassassin>) and if so, rewrites its headers. If the mail is very
+definitely spam - 1.5x more hits than required - then it is dropped on
+the floor; otherwise, it is passed on as normal.
+
+=cut
+
+eval "require RT::Interface::Email::Filter::SpamAssassin_Vendor";
+die $@ if ($@ && $@ !~ qr{^Can't locate RT/Interface/Email/Filter/SpamAssassin_Vendor.pm});
+eval "require RT::Interface::Email::Filter::SpamAssassin_Local";
+die $@ if ($@ && $@ !~ qr{^Can't locate RT/Interface/Email/Filter/SpamAssassin_Local.pm});
+
+1;