I am considering applying Nagy Balazs' patch that ensures that the domain name on the envelope sender is a valid DNS name (linked on qmail.org, http://qmail.area.com/qmail-1.03-mfcheck.3.patch). If you're using this patch, or have an opinion about it, I'd like to hear about it. Problems, incompatibilities with other patches, "this patch kicks ass!", there's a better way, etc... The archives hint at "he re-invented the wheel," but I haven't found anything referring to where I can find it. Thanks, jon
