[Mimedefang] Filtering on SMTP authentication but would like to check for virus

[kd6lvw at yahoo.com]

--- On Fri, 3/16/12, David F. Skoll <dfs at roaringpenguin.com> wrote:
>  my $authenticated = ($SendmailMacros{'auth_type'} && $SendmailMacros{'auth_authen'});

Both are needed?  Isn't the latter [macro] sufficient?