One day, after I logged in to my CMS account here, I discovered that new mail was waiting for me in my reader. The lengthy message was prefaced by the heading:
"From: Mailer@<machine>: Your message could not be sent ..etc"
"Reason: Address unknown..."
Upon scanning this returned letter, I discovered that it had not been written by me at all, and that the intended recipient and sender were thousands of miles away, apparently the unfortunate victims of a random mailer screw-up. The first sentence of that letter, though, I will always remember:
"My dearest Janice:
At last, we have a method of non-verbal communication which is
completely private..."