[Mimedefang] More on filter_helo

[Dirk the Daring]

    I don't have any problems with filter_helo. When it returns a REJECT, 
the SMTP conversation does not seem to progress any further.

    I'm using sendmail v8.13.8, MIMEDefang v2.57 and Perl v8.5.6. Perhaps 
the problem described originally is not really with filter_helo.