>> *check spam folder always > > Well, if I have to do *that*, I might as well not do any filtering at all. > The whole purpose of anti-spam software is to shield me from spam.
Not 100% correct. Now I always check spam folder, dont you? Do you advise your people not to check spam folders? Are you 100% sure that machines can sort 100% efectively what is spam and what is not? >> Here you round the trip and legitimate the sender ! > > Which sender? The envelope sender? The From: header sender? The > Reply-To: sender? Or the Sender: sender? well the From: header is what users see and trust. They do not know about any other sender information
