chore: import upstream snapshot with attribution

webmin/test_sendmail.cgi

@@ -0,0 +1,31 @@
+#!/usr/local/bin/perl
+# Send a test email
+
+require './webmin-lib.pl';
+&ReadParse();
+&error_setup($text{'testmail_err'});
+&foreign_require("mailboxes");
+
+# Validate inputs
+$in{'to'} =~ /^\S+\@\S+$/ || &error($text{'testmail_eto'});
+
+# Send it
+&ui_print_unbuffered_header(undef, $text{'testmail_title'}, "");
+
+$from = &mailboxes::get_from_address();
+print &text('testmail_sending', $from, &html_escape($in{'to'})),"<br>\n";
+eval {
+	local $main::error_must_die = 1;
+	$rv = &mailboxes::send_text_mail($from, $in{'to'}, undef,
+					 $in{'subject'}, $in{'body'});
+	};
+if ($@) {
+	my $err = $@;
+	$err =~ s/\s+at\s+\S+\s+line\s+\d+//;
+	print &text('testmail_failed', $err),"<p>\n";
+	}
+else {
+	print $text{'testmail_done'},"<p>\n";
+	}
+
+&ui_print_footer("edit_sendmail.cgi", $text{'sendmail_title'});